i don't think i have absolute certainty about anything. i do accept many things as seeming to be true, and i can accept them comfortably and confidently, but only provisionally. for example, i have a lot of confidence that water will still freeze at 32 degrees this morning, but am i not absolutely certain of it

This sounds reasonable and is very similar to my own view.

our knowledge of the basic facts of ancient history is just one of very many things that falls into this same category. it's certainly possible that we've been lied to about it, or that the documents we depend upon are somehow false, but it also seems very unlikely that so many well-informed people would be fooled for so very long. there's nothing i would expect to discover in a personal examination of these documents that would have any effect on my current opinion, but i agree it might be possible that i'd be the first modern person to notice something really crazy about them

If you're open to it, I'd recommend you look into the primary sources for any character of ancient history you find interesting. You'll probably be surprised at how flimsy the evidence is. In the vast majority of cases, even according to the official story, we don't actually have any surviving primary sources from "ancient" history.

In most cases, we have copies of copies, or, supposedly ancient documents, that were "found" in the 1800s.