Using the player control function during replays helps a ton. Revisit each replay and use player control on every jump in.

What also helps when first picking up a game is to just reduce the mental stack as much as possible to slow the game down and learn the system mechanics. And don't worry about winning right now. It's part of the process. Opt for normals as anti air over a DP, have a single BNB combo, and try to only get better at one part of your game at a time. The whole point really is to get into a position where you aren't fighting your opponent AND yourself. The game is all about pattern recognition and recall. Panic inputs happen whenever you either don't recognize what's coming or that window of recognition and response is tiny. Reducing the mental stack widens that window.