Thanks for playing my short game! I'm not entirely sure but are you using WASD for moving and X/C to jump/hold breath?
If that's the case then I understand you. I suggest to use arrow keys with your right hand to move and X/C to jump/hold breath.
But thanks for playing it! This version of the game was made in less than 3 days for the Lv.99 Game Jam 2023 and the uploaded version of the game is not up to date. I'm still continuing the development of the game so future updates are possible. :)