Well, there are other microbloging services on the Fediverse. Akkoma. Firefish. Misskey. Or there's Friendica, which has more of a Facebook-like interface and supports groups (eg Lemmy communities).

Lots of options here in the Fediverse.

Kbin is also a link aggregator, but you can also follow mastodon users.

Perhaps it is me never using twitter, but mastodon felt really easy to use. In contrast to lemmy for example. The only difference it seems it has is that names have @ sign used like in email (as they do work like email, or have accounts on different servers).

Then there's the youtube alternative peertube, which has nothing to do with this conversation. I just wanted to remind people it was there 🥰