Whether he is real or not - is not something we can do anything about. We can only grab the tail of the devil we see, and perhaps look in the mirror at times to see if 'do I got a tail and horns again'. (poor English by purpose)
Here’s something you might want to think about:
One instance in the Bible where the Devil isn’t specifically mentioned, but he was definitely there, is in Exodus 7:8-12. The devil was the one behind these Magic-practicing priests.
Can you imagine Moses and Aaron, when they saw that?! No doubt they were glad that Jehovah’s power was mightier! But they learned then that there were invisible forces working against God.
And notice where these invisible forces were located....right with Pharaoh, where the power was!!
When you read Daniel 10:12-21, vss 13 & 20 inform us of a fight between spirit creatures: an angel who was helping Daniel, and two angels (who had become demons) working against him...therefore working against God. Their titles were “the prince of Persia” and “the prince of Greece.”
Apparently, they enjoy being around, and influencing, human governments!
Are you aware that the White House, here in the USA, has been called, “the most haunted house in America”?! I’m sure you can appreciate what that means, since you know what the Bible says about the condition of the dead!
I’d encourage you to enjoy fellowship w/ Jehovah’s people.
Take care, my cousin.