ja naturlich

Why is it I have followed six years of French lessons and I cannot even remember how to greet a customer in French and I’ve had one year of German lessons by the worst teacher ever and I’m just like briefmarke! Ja nach Deutchland??? Jaaa naturlich as if it’s nothing
It’s probably because I’m conscious of making mistakes in French and in German I literally have no clue so it feels like I’m bloody fluent. I probably sound ridiculous