The Exodus is a legend MAYBE based on a small group of a 10-20k laborers that left Egypt.
There was no mass of millions of Jews that wandered out of Egypt at that time.
Learn the lessons from the stories but stop being dense and trying to use them to formulate a coherent historical worldview.
Drought and famine drove the residents of the are further southwest into Egypt, where they eventually decided they didn't like the second class laborer life they were leading and left again at some point.
Moses might even have been a real guy, but they weren't slaves, and there were 1/100th the quantity as the story.