Federated protocols serve this purpose, and fediverse has clients with many of the features people use in social media.
Then for actual social networks, things like briar or manyverse are perfectly functional and only lack network effect.
Then for actual social networks, things like briar or manyverse are perfectly functional and only lack network effect.
For actually community owned protocols (an example is matrix or fediverse), someone has to go first. May as well be you.
Make an account, ask a community group to be contactable without signing over your private info, get a couple of friends to do the same.