You are right there are grains of truth in every story. I have not been taught, I have read many sources. And my interpretation of those events looks very plausible, much better than the moving story of the Jewish slaves in ancient Egypt.

Minuses… People believe that the religious books are something more than collections of fairy tales. But the religious fairy tales were created by other people, with vested interests. If I like reading fairy tales by Jim Butcher, it does not mean that everything described by him is real.

Egypt was for more than a hundred years under occupation. It is quite possible that the occupants were the ancestors of the Jewish people. They were not slaves there.