torrentz2.nz
(Meta-search of a bunch of torrent hosts)
1337x.to
(For movies, tv, etc. it's fine. Be EXTREMELY cautious of other media. The admins there have been caught straight up allowing malware (Balder's Gate torrent shit)
Also if you don't mind a small monthly fee for huge convenience gains:
real-debrid(dot)com
alldebrid
And many more offer cheap (~$2/mnth totally unlimited- and I've downloaded 100s of TBs with no issue) cached torrents. Basically you paste (or usually this is automated via a script you're using in some fashion. I have a bunch of stuff setup on my home server) a torrent magnet or upload a .torrent to the sites. If a cached torrent exists, you can download it immediately at full bandwidth. The two sites I listed have shitloads of cached torrents of movies from 480p-4K and 8K of everything imaginable. All streamable instantly once setup.
Look up "plex_debrid github" if interested. The main dev is called itstoggled. Free project. compatible with jellyfin also if you dislike Plex and want more open source and free. (Ive no affiliation with the project or the dev beyond using the program(s) and donating to their continued efforts)
The original Demonoid had great comments. But it died. I loved the original Torrentz but then it died. And Rarbg was fantastic for me because I wrote gm scripts to improve it to my liking. But then it died too. And there's no substitute for it. I have to check 3+ sites and hope for the best.