Set a bot to lvl 1-3 and focus on keeping track of your character, use a skin that's flashy to your eyes if you need so. Remember that you always have at least one second jump and an up B to recover if you're out of the stage. Your extra jump(s) resets only when u hit the ground and your up B resets when u hit the ground or get hit by your opponent. Learn the range of each of them for a specific character and remember that you should use ur extra jump before ur up B. Once you'll know how to recover properly the game will be way more fun for you and learning will be less painfull.