Every culture has its flood myths.
Noah certainly didn’t build the arc by himself. He was a King or a religious leader who could command thousands of workers.
The flood story is really a store about a Near extinction level event where mankind barely survived.
Interesting the bible ends with the book of revelation which is also a Near extinction level event.
Modern humans have been around for ~ 300k years and Neanderthals ~450k.
We know so little about the past and much of what we think we know is probably wrong.
Noah certainly didn’t build the arc by himself. He was a King or a religious leader who could command thousands of workers.
Can't take Noah's story literally. You have to look at it as a theological allegory with a deeper spiritual meaning. The only thing we know that is true is the flood story because every civilization (in the known world) had to deal with a "great flood".