It is technically possible to install paru through Cargo which you can get just from pacman by installing rust and you can install pikaur through PIP. Both can mess with your systems packages though so I do not recommend it.
These are great suggestions, but for finding communities, I would recommend https://lemmyverse.net/communities instead.
The Interface is nicer, you can directly get the !community@instance.tld string for searching it locally, and it doesn’t use a large blocklist like feddit.de sadly does.
Thank you so much, this really helps with large subreddits like for example r/de or r/videos where most new submissions are quite uninteresting.
Good Bot!