Play SSF2 Turbo. It helps. A lot.
It’s essentially taught me more about footsies and fireball throwing (through my 3 months of playing) then SSF4 has taught me through me 1 year of playing. Whenever you are in mid range, you always feel the need to whiff jabs/shorts or not even attempt to throw fireballs at all. Reactions and antiairs are also required and are more strict in that game. Try it out and see if you can level up yourself! : p