@hrustar It's very different, but once you get a grip of it it's really cool. :) Think of it like you just moved to a new town and first entered the pub alone. You gotta have to start somewhere, once you talk to people the rest will fall into place.
You can look up people who put hashtags into their profile here: https://fediverse.info/explore/people
You may also find some stuff you knew from Twitter through Twitodon: https://twitodon.com/