It's basic. Fix it. Add original music.
Make it look better with some actual sprites. And if you can't make it visually pleasing; just make the art style super simple.

Since I've done some projects of my own but im too shy to post, i can clearly see this is a rushed game or a test. The clicking is most likely due to you added the ability to click, but its not defined or something really stupid that causes and error. Or maybe it because you have the play button at the beginning. If this is a test, please say its a test, or a joke I dont really care.

This game is absolute.

Let's start with the big problems.

1. The music is stolen.
2. The graphics are absolute shit.
3. The platforming physics is unbearable, everything is slippery as hell.
4. Click anywhere on the game and it breaks.
5. The game is short as fuck. If you're going to make a game, good or bad, at least add some content.

Nice job stealing music, dickhead.
Game is awful too. You clearly put no effort into this design and the physics.

I really like it just need to look better :)