I was exactly where you were at some point, and the only reason I knew you did that for the jump, is because I once did the same thing. I would advise you to look up a tutorial on how to apply actual physics calculations to your game. I don't know how old you are, but if you know basic algebra, it shouldn't be too difficult. While actual physics calculations might sound scary, it is actually a lot easier than winging it because thousands, if not tens of thousands of mathematicians have explained how to use these equations in every scenario imaginable, not to mention it will make your game feel natural.
Keep up the good work, I am super glad you are learning from your mistakes and constructive criticism rather than ignoring it. That mindset will help you become an excellent developer in no time!!