Well, I'd recommend starting with the discord as stated above. You can find people interested In roleplay or looking for things to do around there!
Joining a community can always be good for getting involved. The Yanar community is one of my favorites and it's very active! Everyone is welcome and I quite enjoy spending time with them. There is also the Isldar, Sihndar, Allar, Kathar too just to name a few! If you want to get involved with the 'fighting against evil' Niche, you can always try the Greywitch Guards, or the violet order in general whom protect the city. If you've got more interest set in gangs though, perhaps the Bountiful Chalice, Third Eye, Castaways or some of the underworld gangs would suit your liking a bit more. It's very easy to get involved if you communicate and ask around!