But you can't get true stories that are older than the oldest true Bible stories... the creation story for example.

Moses wrote the first 5 books of the Bible. Being at least a prince in Egypt for a while, he had access to records that don't exist today. So, which came first? The records that Moses had, or the few surviving records that we have today?

Your "Quora" site doesn't have an explanation that shows why Moses couldn't have had better records that we don't have. Therefore, your Quora site explanation is simply speculation.