A fun Mastodon thing I don’t think people realise - you can interact with Reddit style services like Lemmy without leaving Mastodon as it’s part of the Fediverse.
Eg I follow the @starfield community by following that user, new posts automatically appear in Mastodon feed, I can upvote by favouriting, and I view and reply to comments in the thread.
I’ve never signed up for Lemmy, here’s me posting from Ivory app via Mastodon.