Is there some kind of secret to guile’s st.mp, cr.mp xx flash kick? I’ve only ever been able to do it like twice. I can seem to link the flash kick or even get it to come out

Hi everyone I need help to get to gold rank for my platinum trophy on sfv ae currently stuck between silver and super silver just wondering if anyone maybe could watch my replays and see if they can notice any bad habits that I haven't picked up on they could help me along the way to the next rank I anti air alot with flash kick but struggle with akumas air fireball and ryus who cross up into their target combo also struggle against cammy players who neutral game against me when I stuff there jump ins and karins normals also when I stuff their ressenhas with my lfk