> Do normal credit cards there not have cash back benefits? Do credit cards exist or because naturally they would charge you interest, do they not exist? It's interesting how there's a whole different ecosystem of apps in the part of the world that most of the world lives in.

I'm not familiar with how credit cards work there, but from my point of view cash-back benefits aren't all that widespread. Aside from AmEx I'm not familiar with any such arrangement available in France. And even AmEx is pretty much a joke, you'd have to spend an enormous amount of money every year just so that cashback could reach the price of the card.