Good question!
My 2 cents…
Suppose for a minute, that the dating evidence of humans and remains demonstrates that we have been living on Earth longer than the biblical chronological history adds up to? We can assume it is A, true, or B, false, and thus the dating methods flawed. So, who said it cannot be true? How do we know the angles did not descend from time to time, put on some human skin and try out the environment? It is plausible, they have been known to take human forum, albeit for more sinister antediluvian antics.
Looking into archeological dating methods some, and without getting into the technical details, I do not think they are that far off. I think it is more plausible to assume A, that it is true, and the Earth is certainly been around a long time.
I think it is time to start looking for other explanations to explain the gaps in the bible. Don’t get me wrong, I am not saying to discount the Geneses allegory totally, but perhaps some details were left out. It gets harder to believe the narrative as is, as man gets smarter and indisputable facts start hitting you in the face. For example, what about Denisovans, Neanderthals, and modern humans? Scientist are not faking these, this is real, and there has to be an explanation that supports the creationist and reality.