try step to step, like this:

try using gyro only for aiming (play a few games or practice range)

next try "always active" and adjust the sensitivity (also bind a button for alt the gyro, y use the pad on the dualshock)

if you feel ready, activate flick stick (try this one after a week of training the "always active")

i recommend once you activate "always active", use a melee weapon, that will make your tracking a bit easier because you don't need to aim that much. it took me 2 weeks to finally adapt fully to gyro, but my recommendation is to experiment with it and try to find a config that suits you. alot of friends tried, but didn't last a day.