One user per server is absolutelty fine. Don't fall for the hype telling you that you MUST be part of an existing instance: the Fediverse goes beyond your serve

One user per server is absolutelty fine. Don't fall for the hype telling you that you MUST be part of an existing instance: the Fediverse goes beyond your server. Honestly at this point if you don't want to self host just pick any random instance. If/when you decide it's not the right fit, moving is a straightforward operation.