I have been using the Friendica.world instance and I like the old look, it makes me feel like I'm back in 2007 though the platform is highly customizable. Friendica itself takes a little getting used as the like and dislike buttons can get stuck and the infinite scroll is disabled by default. The local tab is set to your instance and the global tab shows posts from other platforms such as Mastodon or Flipboard. I haven't tried the Bluesky connection myself yet. So overall I would rate my experience good!

I have checked out the Hubzilla instances but the events seemed a bit limited.