Have a social media app where no one can follow you, and no one can post at a personal level, but rather everything is based on communities.

Nothing is based on a personal level, you can post in a community, you can create a community, you can subscribe to a community, you can upvote a post in a community, you can post a comment in a community, you can reply to a comment in a community, etc. You can also block someone, but it doesn’t matter since you can’t follow anyone and no one can follow you, it’s just so you can’t interact with that person in a community, but they can change their name and interact with you again, so it would be pretty useless to block someone. But yeah, just an app that comes by community, that’s the entire basis of that app.