It's a cute lil' game; you mentioned you only worked on this in a day, right? If so, niiice! The game's fun for a 24 hours game jam. Landing a combo feels super satisfying to hit, but the game has really almost no depth to it.
There's no reason why not to just tag your entire hand as a combo, so if you win any of the rounds you just win the game. Plus, it's just complete RNG if you'll land a hit every round. If you were to expand on the game, it'd say to put more things to consider when picking a move rather than it being completely relied on chance if a certain move is good or not.