FF hasn't had a traditional turn based main entry in over 20 years.

1337x, torrentgalaxy, torrent leech (if you don't care about hit and runs since RD does not seed files enough for private trackers). If it's really obscure, than I gotta do some deep diving to find available files.

Unfortunately that does happen. Real Debrid only keeps torrents cached for a period of time. If the files aren't being accessed regularly, than they will dump the files. If you find an active torrent than you can usually pop it into real debrid, let it download, and access it through stremio. It's definitely not ideal for a lot of people but it's still a great service for popular titles.