the idea of a flood covering the whole world is ridiculous but a heap of rocks hitting the earth can explain much of europe and the americas being flooded (and there is plenty of evidence this happened, the eye of the sahara looks exactly like it was washed away, for example)
there is also a very good hypothesis that noah was somewhere in the region of bulgaria or romania and it wasn't about saving all the animals it was about having animals to farm when the waters finally stopped - the first hypothesis i read that pointed to this suggested maybe it referred to a great glacial melt but giant hot boulders in the atlantic would also very well explain months of rain, including the dust storm, and the evidence exists, the period was called the Younger Dryas and it wasn't until a bit over 1000 years later that another incident happened that burned the shit out of all of the middle east, egypt and north africa, blew up over the atlantic and created several lakes in north america, and all of these are verifiable ... there is numerous legends about a giant fire dragon soaring across the sky, some called it leviathan... , i think others called it jormundangr, it was so legendary i think that the story got to the australian aboriginals who called it the rainbow serpent
and also, the first five books of the bible are basically ripped straight off the sumerian mythology and are the basis of the jewish religion lol
oof, well, thems the atheists right? they can't believe people would do this even though they also understand things like cults exist, and cargo cults, where primitive people have stories about some people who appeared with unbelievable technology they had no words to describe... magic!