Feels very redditty, which is why I'm asking...
Also, what are total buffer size (what does it affect) and session waste (what does it affect)? qbittorrent-nox on Linux.
Go to your tracker of choice
Sort by seeders and/or search your media
If you find a release with no seeders on one tracker, search your other ones.
If you find a match, try to cross-seed.
Boom, you revived/contributed to the torrent.