That's low key the charm of it. I use to only use reddit and it confused me too at first. I never used Twitter but on mastodon you can actually make friends with people. Friends who will discuss the topics you are interested in. I have queer friends on there and gamedev friend and math friends. We are interested in the same things, we boost posts that we all are interested in. Make general often vague looking posts because we know who will see it, like a long drawn out conversation. Its so much cozier than lemmy or reddit, here everyone is trying to correct each other or yell at each other or be the cleverest comment in the thread. On mastodon people are alot more interested in being authentic, thats been my experience of mastodon at least.