There just aren’t many german torrents, at least on public trackers. Might be because of this law firm that constantly sends out letters asking for hundreds of euros per infringement.
I’ve had more luck with Usenet, especially the indexers SceneNZBs and DrunkenSlug. The former is a collaboration with the forum House Of Usenet, which gives me almost always the result I want (e.g. remux, german english dual language).
Automation with *arr works great, but it’s not the type of search and play like with Torrentio + real-debrid. Downloading the entire movie/show takes time depending on the bandwidth.