The longer I am at universities in Germany, the more I believe that you shouldn't study there if you want a good education. At universities of applied sciences, the professors are massively overworked with a way-too-high teaching load to offer qualitative education. And at regular universities, teaching is usually just an afterthought. It's something you have to do, but no one will employ you because you are a good teacher. If you're mediocre, it's more than enough.
And if you are someone who is passionate about teaching but not at least twice as passionate about research, better find a job outside of academia. And give up both teaching and research.