How is your leg
Are you playing football again.


I do not want to cause you problems



thanks for translation

The first translation is correct. The second one well done with 'oynuyor'. "Çalmak" has two meanings. One is to rob/steal and the other is to "play an musical instrument". The third translation could be as below.


Are you playing football again.
Tekrar futbol oynuyor musun?

I do not want to cause you problems.
Sana sorun yaratmak istemem.

Is "sebep olmak" completely incorrect then? Or just less appropriate?

"probleme sebep olmak" or better, "soruna neden olmak" is alright and means to cause a problem. Literally it means "to be the cause of a problem".

So you could say "I don't want to cause a problem" as "probleme sebep olmak istemiyorum" (or soruna neden olmak istemiyorum) but I couldnt figure out a good way to convert this sentence to add the meaning "for you". Sana or seni cant be used. "Senin için" can be used but the outcome is open to misunderstandings.