While BitTorrent itself is a legal technology for sharing large files, using it to download or distribute copyrighted content like without permission is illegal and considered copyright infringement.
Instead of risky torrent sites, you can access the series through several official and legal platforms. Legal Ways to Watch Mayans M.C. Season 4
Choosing to download via unofficial torrent sites carries significant risks:
The most secure way to enjoy the show is through official streaming and digital storefronts: