The French resistance was an insurgency not a military force. Their military folded like a cheap lawn chair.
Not really. The suffered a lot of casualties for folding “like a cheap lawn chair.” They were poorly led and had an idiotic war doctrine (it was stupid in WWI - it was even more stupid in a mechanized era), but they did fight. If they had someone like a Guderian to revolutionize their land warfare doctrine - well, they had more (and better!) tanks than the Wehrmacht in 1940... It would have been bad.
Think of Israel, with a vastly superior military, being “defeated” by Hezbollah, not because of their military’s weakness, but because of idiot politicians (Israeli and American) and you’ll have it about right.