I use to think that Jesus was a myth. The Jesus stories for the most part seemed to have too many contradictions and copied too much from other religions, beliefs and myths to sound real. However, I did hear some good lectures on the historical Jesus.
After listening to them, I lean more toward Jesus really existing as a real person. I see Jesus as a convert to John the Baptist theology. He goes out and preaches in the country. Not too much of a following, but enough to have some regulars. After 1 to 3 years of this, he heads out of the country into the city. He irritates some people.
He seemed to believe that God was going to flip society upside down. The rich would be poor and the poor rich. He seemed to hope that God would make him the Son of Man, so he could become a divine judge. I don't think Jesus ever thought he was the direct offspring of God. Son of God seems to mean you are a good person, not fathered directly by God. But Son of Man was a stringer claim. Maybe Judas let it slip. The problem was that it made Jesus out to be someone plotting the overthrow of the Roman government.
Jesus was tried as an insurgent (not fair by today's standards but common for their standards). His followers hid (so they would not be killed). He was crucified and probably buried in a mass grave. His followers probably assumed he was going to be put into a tomb and found an empty one. They assume the time of God's Kingdom had come as John the Baptist and Jesus had been saying it was real soon (tm). Jesus was seen as the first resurrected.
But it changed to a religion about Jesus.
Anyway, that is my take on it.