Oki doki!
Your first mistake is to present Constantine 1 as "presiding a council to declare Jesus as God." The truth is Constantine 1 called for an ecumenical council which included 318 Bishops, all of them from the East, to bring harmony within the religious community. He realized the great impact that religion has on society. Because of the long-standing controversy regarding the detractors of the Biblical doctrine of the Trinity he brought together this council to try to settle this issue resulting in the Nicene Creed. He did not issue an unsupported edict. The debate regarding the Trinity which was first addressed began with the Sabellian Heresy c.a. 200 AD which denied the orthodox doctrine of the Trinity and promoted a form of Modalism. See:
https://banneroftruth.org/us/resources/articles/2016/sabellianism/
On the heels of this heresy another ensued called Arianism which "agitated the Church for more than a half century". (Creeds of Christendom, Philip Schaff vol. 1 p.24) To this the Nicene Council was convened. And produced the original Nicene Creed.
Your second misrepresentation is what you put forth as the AD 325 Nicene Creed. That is not the Nicene Creed of 325 AD but the Constantinopolitan Creed which was convened by Theodosius in Constantinople, AD 381. Note the differences.
The Nicene Creed of 325.57
We believe in one God, the Father Almighty, Maker of all things visible and invisible.
And in one Lord Jesus Christ, the Son of God, begotten of the Father [the only-begotten; that is, of the essence of the Father, God of God], Light of Light, very God of very God, begotten, not made, being of one substance (ὁμοούσιον) with the Father; by whom all things were made [both in heaven and on earth]; who for us men, and for our salvation, came down and was incarnate and was made man; he suffered, and the third day he rose again, ascended into heaven; from thence he shall come to judge the quick and the dead.
And in the Holy Ghost.
[But those who say: 'There was a time when he was not;' and 'He was not before he was made;' and 'He was made out of nothing,' or 'He is of another substance' or 'essence,' or 'The Son of God is created,' or 'changeable,' or 'alterable'—they are condemned by the holy catholic (this is the Church universal, not the Roman Catholic Church R.B.) and apostolic Church.]
This was the authorized form down to the Council of Chalcedon.
The Constantinopolitan Creed of 381.58
We believe in one God, the Father Almighty, Maker of heaven and earth, and of all things visible and invisible.
And in one Lord Jesus Christ, the only-begotten Son of God, begotten of the Father before all worlds (æons), Light of Light, very God of very God, begotten, not made, being of one substance with the Father; by whom all things were made; who for us men, and for our salvation, came down from heaven, and was incarnate by the Holy Ghost of the Virgin Mary, and was made man; he was crucified for us under Pontius Pilate, and suffered, and was buried, and the third day he rose again, according to the Scriptures, and ascended into heaven, and sitteth on the right hand of the Father; from thence he shall come again, with glory, to judge the quick and the dead; whose kingdom shall have no end.
And in the Holy Ghost, the Lord and Giver of life, who proceedeth from the Father, who with the Father and the Son together is worshiped and glorified, who spake by the prophets. In one holy catholic and apostolic Church; we acknowledge one baptism for the remission of sins; we look for the resurrection of the dead, and the life of the world to come. Amen.
The last issue is that you fail to address direct questions or opposing arguments. For example historic Christianity agrees with your assertion that Jesus was a man. However orthodox Christians go further and accept the Biblical data that He was/is the God-man as I offered earlier and described in the aforementioned Council of Chalcedon produced below:
Council of Chalcedon (451 A.D)
Therefore, following the holy fathers, we all with one accord teach men to acknowledge one and the same Son, our Lord Jesus Christ, at once complete in Godhead and complete in manhood, truly God and truly man, consisting also of a reasonable soul and body; of one substance with the Father as regards his Godhead, and at the same time of one substance with us as regards his manhood; like us in all respects, apart from sin; as regards his Godhead, begotten of the Father before the ages, but yet as regards his manhood begotten, for us men and for our salvation, of Mary the Virgin, the God-bearer; one and the same Christ, Son, Lord, Only-begotten, recognized in two natures, without confusion, without change, without division, without separation; the distinction of natures being in no way annulled by the union, but rather the characteristics of each nature being preserved and coming together to form one person and subsistence, not as parted or separated into two persons, but one and the same Son and Only-begotten God the Word, Lord Jesus Christ; even as the prophets from earliest times spoke of him, and our Lord Jesus Christ himself taught us, and the creed of the fathers has handed down to us.
Jesus' Two Natures: God and Man
by Matt Slick @ carm.org
11/24/08
Jesus is the most important person who has ever lived since he is the Savior, God in human flesh. He is not half God and half man. He is fully divine and fully man. In other words, Jesus has two distinct natures: divine and human. Jesus is the Word who was God and was with God and was made flesh (John 1:1, 14). This means that in the single person of Jesus he has both a human and divine nature, God and man. The divine nature was not changed when the Word became flesh (John 1:1, 14). Instead, the Word was joined with humanity (Col. 2:9). Jesus' divine nature was not altered. Also, Jesus is not merely a man who "had God within Him," nor is he a man who "manifested the God principle." He is God in flesh, second person of the Trinity. "The Son is the radiance of God's glory and the exact representation of his being, sustaining all things by his powerful word." (Heb. 1:3). Jesus' two natures are not "mixed together" (Eutychianism), nor are they combined into a new God-man nature (Monophysitism). They are separate yet act as a unit in the one person of Jesus. This is called the Hypostatic Union.
The following chart should help you see the two natures of Jesus "in action":
GOD MAN
He is worshiped (Matt. 2:2, 11; 14:33) He worshiped the Father (John 17)
He was called God (John 20:28; Heb. 1:8) He was called man (Mark 15:39; John 19:5)
He was called Son of God (Mark 1:1) He was called Son of Man (John 9:35-37)
He is prayed to (Acts 7:59) He prayed to the Father (John 17)
He is sinless (1 Pet. 2:22; Heb. 4:15) He was tempted (Matt. 4:1)
He gives eternal life (John 10:28) He died (Rom. 5:8)
All the fullness of deity dwells in Him (Col. 2:9) He has a body of flesh and bones (Luke 24:39)
The Communicatio Idiomatum
A doctrine that is related to the Hypostatic Union is the communicatio idiomatum (Latin for "communication of properties"). This is the teaching that the attributes of both the divine and human natures are ascribed to the one person of Jesus. This means that the man Jesus could lay claim to the glory He had with the Father before the world was made (John 17:5), claim that He descended from heaven (John 3:13), and also claim omnipresence (Matt. 28:20). All of these are divine qualities that are laid claim to by Jesus; therefore, the attributes of the divine properties were claimed by the person of Jesus.
One of the most common errors that non-Christian cults make is not understanding the two natures of Christ. For example, the Jehovah's Witnesses focus on Jesus' humanity and ignore His divinity. They repeatedly quote verses dealing with Jesus as a man and try to set them against Scripture showing that Jesus is also divine. On the other hand, the Christian Scientists do the reverse. They focus on the Scriptures showing Jesus' divinity to the extent of denying His true humanity.
For a proper understanding of Jesus and, therefore, all other doctrines that relate to Him, His two natures must be properly understood and defined. Jesus is one person with two natures. This is why He would grow in wisdom and stature (Luke 2:52) and yet know all things (John 21:17). He is the Divine Word that became flesh (John 1:1, 14).
The Bible is about Jesus (John 5:39). The prophets prophesied about Him (Acts 10:43). The Father bore witness of Him (John 5:37; 8:18). The Holy Spirit bore witness of Him (John 15:26). The works Jesus did bore witness of Him (John 5:36; 10:25). The multitudes bore witness of Him (John 12:17). And, Jesus bore witness of Himself (John 14:6; 18:6).
Other verses to consider when examining His deity are John 10:30-33; 20:28; Col. 2:9; Phil. 2:5-8; Heb. 1:6-8; and 2 Pet. 1:1.
1 Tim. 2:5 says, "For there is one God, and one mediator also between God and men, the man Christ Jesus." Right now, there is a man in heaven on the throne of God. He is our advocate with the Father (1 John 2:1). He is our Savior (Titus 2:13). He is our Lord (Rom. 10:9-10). He is Jesus.