With a literal, flat landscape reading of the Bible as “factual” history (this article does appear in ‘History’ section), I also think we are forced to do some mental gymnastics to make the scenario work with Adam and Eve being the “first” human beings. I will assume you also think that human civilization on earth began approximately 6,000 years ago. I used to believe the same thing, no worries.

In North America (Pennsylvania), archeologists uncovered and dated a settlement between 16,000 and 19,000 years ago (https://www.atlasobscura.com/articles/meadowcroft-rockshelter-north-america-s-oldest-human-settlement). Though there are disputes about the age of the settlement being more recent (let’s say the 12,000–14,000 year range), this shows that human beings (not just hairy, small-brained hominids) existed. Note the picture of the 12,000 year old spearhead in that article.

There are also archeological findings in Idaho of a settlement ranging in the 15,280–16,560 year old range (with stone tools and a hearth to boot). That article appears here: https://www.livescience.com/america-settlement-was-by-boat.html

If you look at civilizations (communities developed with a social, economic structure), some are dated 10,000 years ago (such as in Egypt).

The Hebrew people were more likely attempting to allegorically, metaphorically, with possibly some historicity, to write their own version of creation and origin (as in origin of the Hebrew peoples).

I recommend a great book by Dr. Peter Enns (The Evolution of Adam) regarding the story of Adam in the Bible and how it relates to world history at large. “Evolution of Adam: What the Bible Does and Doesn’t Say about Human Origins”

https://www.amazon.com/dp/158743315X/ref=cm_sw_r_cp_api_glt_fabc_GF19R12SEXP5KJEXQCZ9

Thanks for your support! Writing to clear my head of bombarding thoughts. Please enjoy the trip!