1337x uses Torrent trader https://github.com/MicrosoulV3/TorrentTrader-v3 https://sourceforge.net/projects/torrenttrader/

Not viable at all for a beginner, I’d say. If you can’t find a torrent website you like, there are many other ways to search for content, e.g. using the built in search functionality in qBittorrent with Jackett; using Sonarr (TV shows) and/or Radarr (Movies) as a content download manager for qBittorrent and/or Usenet, etc. Any of those options will give you better results and a better experience than using specific torrent websites since they can yield aggregate results from many different indexers/trackers in one place.