There are actually a lot of Nostr Telegram groups, Discord groups, SimpleX chats, Slack teams, Reddit forums, Stackerwhateverpage, etc. Everyone talking about Nostr, but not on Nostr because in those other places, you don't have to be popular to have a conversation. People just talk to whoever is around and wanting to talk.

This social media stuff just sucks, man. You can be sitting there, surrounded by hundreds or even thousands of people, and feel completely alone. 

 "This social media stuff just sucks, man. You can be sitting there, surrounded by hundreds or even thousands of people, and feel completely alone."
This is part of the reason I stopped using everything but nostr for my social media of choice & dead bird app for my news…
No one ever interacted much if ever.