It really is not rocket science. Sound fundamentals (Sight Alignment, stance & Trigger control) combined with a proper mindset.
That’s a great description of the grammar school of personal defensive training. If you are lucky, they may even contribute to you winning a real gunfight.
Or they may contribute to you losing it.
The second rule of a gunfight (1st: have a gun) is don’t get shot. Train on a square range with fundamentals only, and you train to stand still. Train to use sights and you may be too slow to shoot fast at close distances.
High school = movement, drawing, shooting while moving—all of which are natural responses to being threatened with a gun. Can’t be practiced on the square range. Angles, speed, equipment make a difference.
Shooting from disadvantaged positions, on the ground, from behind/around cover, off handed, malfunction clearances. Now you’re heading into the college of gunfighting. This is useful additional training. It’s fun, confidence building, and may actually give you an advantage in a reactive gunfight.
Then there are the considerations for a pro-active gunfight when you go after an active killer. Distance shooting, head shots, follow up, additional adversaries.
Don’t limit your training to a couple of boxes at the square range once a month working on just the basics. There is much, much more.