The level of evidence needed for the existence of Socrates is lower than the level needed that Jesus resurrected from the dead.
See there's your problem.
The bible is historical evidence that people sincerely believed they had witnessed miracles.
You don't have to believe in actual miracles - just do what the climate change and holocaust deniers do. You just tell yourself they were deluded or hallucinating or lying. Simple.
But this Jesus Myther conspiracy theory is even more extraordinary than the lesser claim that Gospel writers were honestly mistaken.
No, it's like telling yourself that your grandfather's cousin knew a guy who'd been abducted by aliens and anally probed aboard their spaceship back in the 1960s, so there's a witness account of alien abductions and anyone who disputes this historical fact is pretty much the same as a holocaust denier.