‘Many researchers have found ancient texts that depict a different history of civilization than that explained in most mainstream teachings.’ As these stories are so different from mainstream teachings, they can be easy to dismiss. However, it is worth listening to the research people have done and forming your own opinion.
Matthew LaCroix (Matt LaCroix) is a renowned researcher in this field. Here are some of his videos along with others discussing the findings:
Read more on ancient knowledge here.