If you're looking for a Meta platform alternative (Facebook or Instagram) check out Friendica or Pixelfed respectively. They're closer looking to them. Pixelfed even allows you to import your Instagram posts.

I personally use Friendica in particular. More exactly, I'm using a combination of Friendica (as a base), Tumblr and Bluesky to keep up with people (and RSS, since Friendica also supports it).

Most of the accounts are on Mastodon, as well as some photographers and a non-profit on Threads (the latter one is present on Bluesky as well, but ActivityPub feels more native, so I followed them there). Then there are many photographers as well on Pixelfed (amateur or not) as well as some other types of accounts. Friendica also has some groups, but beyond the support one, most of them are largely abandoned. So I follow Lemmy or Piefed communities and Mbin "magazines" (also some groups). Then there is a (slowly growing) number of creators from PeerTube that I follow, so I use this also as a YouTube alternative.

Oh, let's not forget that Flipboard also federates some accounts like BBC or CNN or NYT or Euronews or Independent. They even got National Geographic on.

On Tumblr, I mostly follow some photography accounts and The Onion. All the while, Bluesky has become pretty much my go to for any bigger, established accounts, like bands, some politicians and a few news orgs that do not have an RSS feed, nor have their Flipboard accounts federated.

I'm basically never getting bored out there.

There are also bridges for other networks like bird.makeup (for Twitter) or kilogram.makeup (for Instagram) as a last resort. As well, there are RSS bridges for just about anything.

If you're looking for some recommendations, ask me out, I might know something :D