I searched for ages for a replacement of something like torrentz, and the rarbg drop made me start the search again. I ended up trying the included search in qbittorrent, and I’m very happy with the results, it scans many public trackers, and I have always found what I wanted.
To be clear, qbittorrent is a desktop app for linux/windows/mac, that has a panel where you can search for torrents:
I too have a lot of there chinese torrents with 0% progress. They all use the same client (probably spoofed). Qbit sadly doesn’t have a filter by client, so I’ll try the superseeding mode on those.