First half is wrong, second half open to interpretation. There is historical evidence that Jesus existed, whether or not one believes in divine origin. Log in to see images!
There’s also evidence that the whole thing would make more sense as an extended parable; various inconsistencies between the story and known facts, some of the earliest christian writings talking about jesus as a purely divine figure (not as a guy who was strolling around Terra Firma shortly before), a lot of the important places in the story showing no signs of having been settled at the time in question…
But it was 2000+ years ago, the only honest answer is “who ****ing knows?”. Dude could have been some wandering rabbi type, or a composite of several people, or an imaginary figure for fun and profit.