Go on facebook and talk about how you are leaving. Posting a recent photo of yourself or pet is a good way to ensure that your post isn't buried. The people who know you there will be happy to see you. Confused you are showing up just to loudly go away and very curious about what other options there are.
Most people think bluesky is "the good one" ... and I say "it's better, but it's cut off from most of the public social media servers I use.