So right off the bat, I do like the premise of the game. Kind of reminds me of Flappy Bird where you need to properly time your jumps.
What could use some improvement: I find that the main menu could use some work. Namely that it's very hard to tell if a selection is highlighted. It would be good if the selected option was much brighter. In terms of the gameplay itself, I found that the character was a bit hard to control. The player moved very slowly from left to right, making it hard to navigate. The jump was also a bit finniky, as the gravity was very slow going up and down. I also couldn't tell when I was out of jumps because the game kept making the jump sound effect even when I could no longer jump.
This is less necessary to the game, but I would highly suggest that you let players chose if they want to use WASD keys, or arrow keys, as people have different playstyles. As an example: I find that WASD works better if I'm playing a game that also uses the mouse for gameplay, and arrow keys work better for me when I'm using the spacebar as a main focus to the game. I also got kind of bamboozled by the controls menu, because the icon made me think it was controller compatible, and I was disappointed when my controller didn't work.
All in all though, I do think that this can be a fun game once all of the kinks are worked out. I like the pixel art in it. The music is fun, though very loud, lol. Hopefully you keep improving!