For new people:
The fediverse has been around for around a decade now, and it's not going to "die" any time soon.
Other centralized social media encourages bad habits to keep engagement, but we're not about that here. It takes time to shake those bad habits, but do your best and you'll get used to it. Thanks to the public timelines, everyone has an audience right away here, so nobody worries about follower count/ratio. We're here to have a good time, not to get "clout".