One click hosters are pretty popular in Germany, so you will find lots of German stuff hosted one one of these. The most popular ones right now are rapidgator and ddownload. You will need special websites and forums for finding the links, though.

Everything which is aired on the public channels lands in the mediathek and you can legally download it for a while. Here is a handy search tool:

https://mediathekviewweb.de/

Usenet is the secret for German stuff. I have a German beginners guide: https://github.com/PCJones/usenet-guide

How about German private trackers?

torrentleech is pretty good. message me with your email if you want invite.

If you are using jackett or prowlarr then filter the indexers by language and only select the german ones and try to get into them. Some will let you fill out a form to get an invite

s. to, you may need to use the IP so go over Aniworld. to and use their directory. Its streaming.

maybe https://cinemaz.to/ but it's private also

You have exemple of content you're looking for, I could check if it is there?