I'm not pouncing on you here... but disabling holster retention features, pulling the trigger, hitting the slide release/mag release/cylinder release, opening a mag pouch, using a flashlight are all fine motor skills. All those Wild West gunfighters using SA revolvers had to have fine motorskills under stress, so did the Minutemen completing complicated reloading steps on the battlefield.
If you don't train and prepare to fight or flight, you won't do either. In CHP's Newhall shootout, James Pence died reloading, because his trainers allowed him to dump his empty shell casings into his hand to place in his pocket instead of on the ground...because quickly cleaning up the range after quals was more important than preparing to fight. In the Jonesboro, Arkansas school shooting, Shannon Wright dove on top of a student to shield them from bullets with her own body, laying there waiting for death instead of escaping the killzone, because that's exactly what she prepared to do in her NG medic training...protect the patient. Peter Soulis continued to fight after taking multiple hits from an attacker who took more than an entire Glock 22 magazine COM, he brought the fight to the felon and won...because he prepared to overcome.
Training isn't a thing you get one time and have forever like a holster or T-shirt, and marksmanship isn't fighting. It's an ongoing lifestyle of preparation, a devotion to keeping your skills honed & ready for brutal violence.