Who wrote the Bible (Old Testament)

Moses died several centuries before Aramaic was written so he could not have written the Hebrew bible. No one knows who did. What we do know is that when it was written it had been through a few thousand years of verbal transition. How accurate could it be? Is it any more or less real than the so-called Norse, Roman or Greek myths? Following are a few links that are to events in the Bible.

https://www.quora.com/Do-ancient-Egyptian-records-mention-the-Israelites-or-their-exodus-from-Egypt-as-described-in-Exodus

https://knowledge.e.southern.edu/cgi/viewcontent.cgi?article=1085&context=jiur#:~:text=As%20already%20mentioned%2C%20Exodus%2012,years%E2%80%9D%20(author’s%20translation).

https://www.tandfonline.com/doi/pdf/10.1179/peq.1944.76.1.164#:~:text=(Num.,would%20be%20about%20two%20millions.https://www.quora.com/What-was-the-population-in-Ancient-Egypt-What-did-the-population-depend-on