Do you want this social media to be for your family to use only with family members or for them to use with family and beyond?
Revolt could be good as a local family group chat if you like the discord style. You’ve probably already tried it but Pixelfed/mastodon/misskey sound like the easiest to get family on board with and seem like they would be good family social media platforms IMO.
Its so funny that in the indie scene LGBT people are known for making amazingly quality games but somehow in the triple a world they’re ruining them?? Doesn’t compute to me.