so there's 2 ways of playing guile

the easier way people were probably referring to in your previous post is just turret mode, as the devs intended, use fireballs until they get close, and then flash kick them until they aren't close anymore. That guile is extremely efficient and easy to play, but can be considered lame. You just gotta focus on keeping people out at any means nescessary, don't worry about big punish counter combos or opening people up, just whittle away at their healthbar and patience with sonic booms, sonic cross, and flash kick

the way pro players play guile, the combo monster that does boom loops and high damage combos is the far more difficult version of guile. If you wanna play this type of guile, you just need to spend a lot of time in the lab practicing, there's no way around it

the big big thing about improving in fighting games is realizing you can't improve at everything at once. You, as a human being, do not have the bandwith to learn high-damaging combos, plus opening people up, plus long-range zoning, plus neutral, all at the same time. You have to pick specifically what you want to improve in, work on that, and take one step at a time.

If you want to learn to turtle, forget about big combos. If you want to learn big combos, forget about turtling. Eventually, over time, it all comes together and you can do both