The tech for the longest jump level is this: If you spam fly on the way up, you reach max height and the flying stops before it normally would when the timer does. So you want to hit max height at the same time the flying timer expires, so that you can maximise your distance. Hope that helps!
@nazgul9448 thank you! A lot of people don't know how these are made! The creator is one of my regulars on twitch! It takes countless hours to arrange the different sprites so they make the espesific sounds that you hear as music!