There's more evidence for the existence of Jesus than there is for most of anyone in the ancient world including kings and queens. Christ mythers are a fringe group that's composed of people with an emotional attachment to atheism and therefore don't want to actually look at the evidence and apply it rationally, or people who willfully want to antagonize Christ and know exactly that they're being disingenuous but don't want to stop for financial or otherwise egotistical reasons. If you're arguing with someone who is one, they're usually on the emotional, lazy ignoramus side of things and providing facts isn't gonna do anything, they need to take the initiative themselves.