I swear almost always in Spanish. I have way more room for creativity there hahaha. From time to time I'll mutter to myself f*** or something like that when something isn't working, but nothing else. Oh wait, yes, I also use wtf irl hahaha I've gotten that habit and people around me use it as well so... It works.
Also I still have trouble wrapping my head around the fact that swearing isn't perceived the same way in Spanish (at least in Spain) than in English. Gotta get used to using hell instead or f*** for now svdkgk