The story is to just teach the spiritual lesson, right?
Maybe only by faith. There is no archaeological evidence has been found that confirms the crossing of the Red Sea ever took place.
Moses did not part the Red Sea. God did. It would be good if you went and read about it first, as it is laid out in the Bible so you can see who did what.
God does not lie. This is history.
there is proof. There is one article about that. I forgot the link for it. but there is proof
here is one