One alternative, to the FOSS social networks, like diaspora, friendica, and hubzilla (and of course mastodon ) is the citadel suite. It has an amazing pedigree, (like 30 years) so is not going away with the next fad or craze. It's rock solid, and has a small but friendly team who maintain and add to this great system.
Goto" uncensored.citadel.org " site, sign up to see a citadel in action.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko