The benefit of studying and getting a good degree comes later. Don’t underestimate all the powerful things you’ll learn accumulatively. While you’re at the Uni, enjoy your colleagues, make friends, and be grateful that the Uni in Germany is practically free. This will last you a lifetime. I myself studied at the University of Münster in Germany many years ago, and while I was at the Uni I couldn’t wait to get out. But now, I am so grateful that I had those years of studying, without student debt. Stick the course. It will be awesome.