Hi! Thanks for the feedback.
The game is entirely played with the arrow keys, as stated in the game page. Ik I should've put them in-game but I guess I didn't because I just wanted my game to have so many functions that I forgot about stating the controls.
Controls: You probably would like to use AWSD. However, they don't work-in game, sorry! Ik they are the most used but I wanted to make an "Intuitive atmosphere" thing that didn't end up working.
Left Arrow / Right Arrow: Move to the window in that direction. Collect / Crash with whatever is there.
Up Arrow: Feed your fish
Down Arrow: Change the water your fish is in.
I won't force you to change your rating, because that's your decision, but as you stated that you would've find it fun if you knew what you were doing, I thought this could help you give it a second shot, and even if you don't change your opinion, have the best experience you could have with it.
Thanks for playing and rating! I hope this helps you!