are there already German releases with av1?

Basically all closed and invite only. Since asking for an invite is bad practice, you have no chance in getting into any of those if you are not already in or have friends who are already in.

I literally just replied to someone else saying that it's very hard to find German stuff. Will take a look at this once I get home, thanks a lot.

How safe are private trackers? I am very worried about getting mail from a lawyer if I use my real IP for sharing.

Only private trackers. I don't know why there aren't any exile Germans torrenting but there is barely anything. Private trackers are better for storing and sharing content anyway.