YAMAPIKARIYA

There were a bunch of smaller social media platforms I've been on around 2016 that did the separation for age and it usually just ended up with 18- marking themselves as 18+ and vice versa. I can't remember the name for it. I think one was called teen network or something. And the other one was a mobile app with a blue target logo.

Good idea on paper, an absolute disaster in practice. Seen it tried before and it was a mess

It's common on some other larger platforms too. I see the same people across multiple YouTube channels sometimes.

I start instance surfing. I go into federated instance lists and just pick a random one to explore.

Not bad. It’s normal to have alts on any social media platform

Create your own instance, defedrate, profit.