The simple answer:
Get Qbittorrent and use it’s built-in search engine.
The fully automated gay space answer:
These are the apps you’ll need:
(There is also Lidarr for music and Readarr for books)
If all set up correctly, you simply just request something with Overseerr and it shows up in Plex minutes later with artwork and metadata all pulled in and presented nicely. You can configure the apps to look for specific resolutions/file sizes/formats/etc. TV shows are downloaded as soon as a new episode is released. It’s better than any streaming service by leaps and bounds.
Just noticing this, thank you!