I like synths with movements instead of keys a lot better. They give me that old sci-fi vibe. It's something that should be nice with the Quest VR handtracking.
These days there are several tools that map hand tracking to MIDI CCs and notes, you might enjoy something like that. It's on my list to try sometime in 2025. :-)
Here's an example, although I'm not sure if it's good or not because I haven't tried it yet. https://www.uwyn.com/geco/
(but no, really not like this; https://www.meta.com/en-gb/experiences/synthvr/3748465338566... ; then I would just get a real synth)