k so I can't give too much feedback cuz I played less than 10 minutes but it's better than nothing.
first of all, the chat-gpt description of the game doesn't really bode well. it would be way better as just a few basic keywords like "2d volleyball game" and below that, all the game's controls in a concise bullet list (just like you already did in your other volleyball game). having to skim through 7 paragraphs of filler looking for the controls that are mixed in is pretty annoying.
the so-called "power" mechanic is an interesting way to add more control, but it's a bit unintuitive. I appreciate the shortcuts you added on top of the more precise control with Q and E, tho maybe their values could be adjusted a bit (to 1, 5 and 15?).
I think you should consider using the right mouse button. as far as I could tell, you didn't. I don't really see why you'd have the set button on F when it could be on the right mouse button. also, is there a mechanical difference between a set and a dig?
there's no blocking. I guess I kind of understand since there are only two players on each side of the court at any given time, but even if a spike gets blocked it's easily remedied by a well timed dig near the net by the other player. if this were to have a multiplayer, rallies would just end up being receive, set, spike, repeat, while everyone waits for someone to fuck up the receive so they can score a point. there wouldn't really be much decision-making.
that's about all I have to say for now. keep at it