The French were horrified by what had happened in Spain from 1936-1939 with Stalin’s support, and were terrified of Communism. They wanted neutrality in WWII (to the point where they killed American troops - allied with Stalin - landing in French North Africa in 1942), and law & order in the meantime - which they got. Unlike Spain, they didn’t have 7,000+ priests killed, their churches burned to the ground, and their landowners and business owners massacred.
People today have no idea how tumultuous Europe was in the years leading up to WWII, with Communists trying to overthrow most governments and reactionaries fighting to suppress them; Americans learn about it through the prism of our experiences alone. Europe was filled with evil people who just wanted to kill others; it was filled with desperate people watching their way of life being destroyed.
Correction: Europe WASN’T filled with evil people who just wanted to kill others