This is a really good concept actually, I loveeed it, would absolutely play some mobile or web game like that ! Makes me think about wordle-like games too, maybe it could be a one puzzle a day thing, those are popular these days. You absolutely nailed it !
Now the graphics are really simple but works maybe you could look on Balatro's side which does a very good job of making good graphics that fits a more "classic genre" of game :) That is if its your goal obviously.
Anyway I've finished it immediatly, I'm super fan of those sort of puzzle and you did it really well, congrats !