i actually find your monkey sprite to be a charming and readable shape, honestly it's quite good for your first time drawing. you even drew alternating frames for both pedal inputs which is nice, not everyone has made their sprites move like that. you even have some motions on the start screen lol.
the little checkbox for motivate bgm was a fun idea but the switch between the two songs sounds very jarring and bad (i also couldn't hear tits out for the boys correctly at first) maybe playing it when you grab a banana would've upped the shitpost of it instead. and wow you even drew the banana up his ass, i didn't understand what that even did though. by the way they should stand out against the road lines more, maybe those can be white instead of yellow. i think you should've gone ahead and drawn the road yourself too, draw everything from the cinnamoroll to the buttons and it'll look more organic and shitposty (in a fun way) with your rough lines.
the cinnamoroll losing money is also a fun idea but i think he should be a lot bigger visually, like the merch connor buys isn't even that small. and also any sort of feedback to show the negative hit you take from that because i'm barely looking at the number and the sound that plays doesn't make it sound bad.
the controls were hard to understand even after reading them, i thought since it was pedalling that you were meant to alternate tapping back and forth between them and i just kept swerving left for some reason. eventually i figured it out but it wasn't easy lol. the speed on the road also feels painfully slow while also being painfully wide, and then when i get enough banana speed it's too fast to stay on the road. maybe if everything was bigger on the road and it panned up a little faster it'd feel better.
so yeah the gameplay could be stronger, but props on making an android build (how i played it) if it felt better to play i could see it being a nice little shitpost style mobile game for the jam. you also put some nice effort into displaying your controls on the page (still need to show them ingame though) and crediting your sound. it doesn't seem like you created "a vast majority of the music during the 4 days" though so maybe answer no to that? anyways, not as bad as you might think, some fun ideas that you could've locked in on harder and gameplay that could've felt less bad.