If you’d like to give ballet a go, there are all sorts of ways to do it online:

David Kierce, one of the best teachers in the business, runs online classes and teaches in central London during non-Covid times. Classes are live, which makes them feel much more like a real ballet studio experience. Sign up here.
The Ballet Retreat runs retreats (as you might have guessed from the title). It also currently offers online virtual retreats . Join one here.
It’s certainly not a beginners class, but the Royal Opera House shared its morning class online, and you’re more than welcome to follow along at home (though be sensible – if something hurts, stop, and it should go without saying that you should never attempt to dance en pointe for the first time unless you’ve got the supervision of a teacher).
Kathryn Morgan is a vlogger and ballerina who has talked about her mental and physical health, as well as dance. She’s got a prerecorded barre class for beginners, which is a perfect place to start.

“Adult ballet helped me learn how to meditate”