Yes, I got on https://mastodon.sdf.org/ . So far so good. Edit: the reply is now deleted, but someone asked why I picked this server. I researched sdf.org and found they've been around a long time (20+ years) and the server rules seemed reasonable and not overly narrow or restrictive. Also, I actually got the registration email from this one, I tried some others and never got the promised email.
Why did you pick that? It's not obvious how to choose a fediverse instance to join.
Pick one that aligns with your interests, even superficially. You can migrate accounts between instances if you feel you made a mistake.