Educational perspective from the instructor side.
A common question I see from newer handgun owners is whether adding an optic will help them shoot better. Sometimes the answer is yes. Often the better answer is, not yet.
There is nothing wrong with pistol optics. A good dot can be a very useful tool. It can help a shooter see movement, track the gun, and understand what is happening during the trigger press. In some ways, a dot will tell on you faster than iron sights will. If the gun is moving all over the place, the dot makes that pretty obvious. Unfortunately, seeing the problem is not the same thing as fixing the problem. An optic does not fix grip, trigger control, recoil management or presentation. A red dot simply makes it easier for the shooter to actually see that they aren’t as steady as they think. Most importantly, a red dot does not make a small carry gun behave like a full-size pistol.
A compact or micro carry gun is usually harder to shoot well than a larger handgun. Less grip. Less weight. Shorter sight radius if you are using irons. More movement in the hand. More room for small mistakes to show up on target.
So when someone says they shoot a full-size gun better than a smaller carry gun, that does not surprise me. Most people do. The gun is easier to hold, easier to control, and more forgiving when the shooter makes a mistake.
The question is what to do next. If a shooter has put a thousand rounds through a handgun and still feels like they are horrible with it, my first recommendation is not another accessory. My first recommendation is usually an hour or two with a good pistol instructor. Not because the shooter is hopeless. Because they are probably practicing the same problem over and over. More rounds do not automatically mean more improvement unless accompanied by good instructor feedback. If the grip is inconsistent, the trigger press is rough, or the shooter is fighting recoil before the shot even breaks, more ammunition just makes those habits stronger.
A dot may help expose that problem. It may even make some things easier to diagnose. But it will not replace the work.
The right order matters. Learn to hold the gun consistently. Learn to press the trigger without disturbing the gun. Learn to manage recoil without fighting yourself. Learn what the sights or dot are actually telling you.
Only after you’ve put in the necessary time and effort to develop the fundamentals are you able to decide whether an optic is the right tool for that gun and that purpose.
I am not against optics. I am against buying gear to avoid learning fundamentals. A good optic on a well-handled pistol can be excellent. A good optic on a poorly handled pistol is still attached to a poorly handled pistol. The problem did not disappear. It just got a brighter aiming point.

Discipline with a side of attitude.