Nah you're right, I've probably needed therapy for a long time. In fact, I'm pretty sure that I'm lifelong undiagnosed something, either autism or ADHD or both. And definitely depression, although I'm starting to believe that it's a symptom rather than the cause. And going around like this without answers or treatment has kinda wrecked my life so far.
The thing that has been holding me back from seeking answers in recent years is that I really can't afford private help and I have strong doubts about the public healthcare system in my country, particularly when it comes to mental health. But I'm starting to realise that the least I could do is try it.
I think what happened with me on Bluesky is that when things started off ok there, I started daydreaming that I could put the recluse life behind and re-join the world. I wanted to try something completely different from Reddit and I was invested in making something for myself on this shiny new platform, leaving the recluse life behind me and rejoining society. For years, apart from checking other platforms out occasionally, Reddit was my sole social media, so it was a new, exciting adventure lol. I built up some pretty big expectations of how it was going to go in my head and reality didn't live up to it. Maybe I can be ready to try again once I've settled here properly for my main social media fix and it's no longer this personal project that I can't live up to.
And to answer your first question (sorry), as I understand it, it's not federated but it is open source and available for others to make use of the protocol if they want.
I started off on MySpace when I was around 17 or 18. But back then I didn't have uncapped wifi and I would've had either a brick or a java dumbphone in my pocket, so I only really accessed it at work. Those were fun times though.
After MySpace I used various forum sites. I wasn't interested in Facebook because my opinion was "been there, done that with MySpace" but a family member signed me up there. And I'd be lying if I said I didn't end up hooked there for a few years.
When I finally discovered Reddit though, I dropped Facebook like a hot potato and went all in. It was like the forum sites I loved but bigger and better and with everything in one place.
Never could get the hang of Twitter though. I don't 'get' places like Instagram either because you can in fact, post photos on other social media too. And the comment sections are a dumpster fire. And I tried TikTok but see absolutely no value in being spoonfed content instead of choosing.