Since I can't stand twitter, and since so many of my local groups use twitter, I use FreshRSS (self-hosted) to list new posts via Nitter's RSS feature.
I also use RSS for Lemmy content and a few Reddit communities I still follow (until they show up on Lemmy) via old.reddit.com.
And some updates from YouTube channels or software release notes.
Really, my goal is to consolidate things, so I'm not checking 10 different sources every day.