On the question of whether moses was an actual historical person how do you explain?

The Bible copies so much from other cultures near the land of the authors of it. Moses is copied from Sargon, Noah is copied from Utnapishtim, Jesus is copied from Mithras, etc. Believers have not done any research about such matters. They want to believe fiction, so they refuse to see anything that disproves its reality. The Egyptian Captivity is just fiction. I do not want to hear apologists try feebly to excuse these flaws in the Bible. They only add proof that the Bible is very bad fiction.