Check out "Platformer :)" (BETTER platformer) The controls are u, w, up arrow, and space for moving up. b, s, and down arrow are for moving down. a, r, and right arrow are for moving right and d, l, and left arrow are for moving left. It is a bit glitchy. There are only 5 levels so it cycles. When you don't do something, it bobs. You can also slide up walls. (Next level = f,n. Prev = e,p. Select = q,click. Blue means locked, and green means unlocked) k to kushion your fall ... or float (If you can figure out how it works, then you deserve floating)
https://www.youtube.com/watch?v=MAjobdDNqKY&t=849s was a helpful video, but I only watched some of it. Then I added my own stuff.