With Three Mile Island everything that could go wrong did and it still wound up being an overblown non-issue. There have been exactly 0 environmental or health impacts due to Three Mile Island despite it being the worst nuclear disaster in US history.
Fukushima was built in a stupid location. How about we don’t build nuclear power plants on fault lines in tsunami prone areas. Literally 4 different fault lines converge on Japan, it is not a place anyone should be building nuclear power plants.