@chrishayuk @shanselman Mastodon does feel kind of empty until you start following people because there isn't an algorithm to "recommend" folks to you. The closest thing to that is to use the "federated" timeline to just scroll literally everything in real time as it gets posted to the fediverse as a whole. I think @Gargron disabled the federated timeline in the official Mastodon app so you'll have to use the website or a third party app like Tusky to see it.
Welcome to the fediverse!