having records of Christ 30-40 years after his death is actually really really good for ancient sourcing. I'm fine with you saying he never existed, but I have a list of about 200 historical figures who you also have to say never existed by this logic.

The "Christ was a myth" argument is kind of ill-informed, you will find very very few - secular and religious - biblical history scholars who support it. Those who do are often kind of fringe figures. I mean this as no insult to you, but Christ existing is pretty much solid. It's his divinity that's in question (and that question is a lot more interesting)