I think that you should look up in Wikipedia the site ”Ashurbanipals library” specific the Gilgamesh epos. Archeologists have found 4000 years old clay plates with readable texts on it. These clay plates were written in original 4000-4500 hundred years ago, and they (specially the Gilgamesh epos) were talking about an ancient flood, that took place during the reign of the evil king Gilgamesh. Now observe that these texts still are readable in ORIGINAL.
All other texts we have are much younger and in fact only transcriptions of transcriptions of transcription, of older translations of transcriptions…..a.s.f. In fact as far I know the oldest peace of text taken from the Bible is the P54. (P stands for Papyrus) It is. a fragment of the size of your credit card, and it is dated to probably somewhere year 100 after Christ. What has happened with the original text during that time journey, we haven´t a clue. But those clay plates or cylinders are original documents, and they talk about ancient stories and scientists believe that even the Bible has got its story about the flood from these plates. Even the Plato story about Atlantis, fits the Gilgamesh epos rather good.
The fact that we can link many of the mentioned regents and the mentioned stories in a time schedule (the evil king Gilgamesh for instance), makes the Bible texts absolutely insane. The Bible is not more reliable than the scriptures of Plato and Aristotele. And we know for Shure that their vision of the creation, or the world , the physic world or the eventual the world of Gods is nothing but just ferry tales..
Bugbear