A man I met at a muzzle loader shoot ,Ron Long,was known to be a pretty darn good shot. Something about the Olympics ,Coors Scheutzen trophies...
I don't have a bio on him,but the guy could shoot.
I was listening to his conversation. He had a Clausing lathe in his shop.
And he had a pellet pistol,with a pellet trap and target.
Several times a day,when he would start a power feed cut on the lathe,
He'd squeeze off a pellet at the target.
What I'm getting at is if you can find one or two minutes to dry fire just a few very focused,perfect shots a day,or twice a day, I think you can establish squeezing off perfect shots as your "normal"
I'm not sure a person will maintain that standard of focusing on "perfect" for 50 or 100 shots
Training into bad habits can be very hard to reverse.
Most modern centerfires can handle dry firing,but investing in some snap cap dummy rounds might not be a bad idea.
I can understand why you selected the Ruger LCP,and I understand why you selected a Glock 9mm for your next purchase. Those are two good guns for self defense.
As good as they are for self defense,they are not what I would recommend for learning handgun marksmanship.
A basic,used standard model Ruger 22 would be a good choice. There are a lot of them out there.Thats probably the most economic choice. There are other good choices,of course.The bull barreled Target model is even better.
You won't regret having a good 22 pistol.
In case you have not already learned this,your eye cannot focus on the sights and the target at the same time.
Its critical you focus on the sights. You'll see your target. But you must focus on equal light gap on both sides of the blade in the notch,and the top of the blade and the top of the notch being level. As you hold that alignment,the gun will wander around on the target. Thats OK. Wander all over getting a 7 or 8 or 9 or 10.
Let the sights be mis aligned and you can miss the paper.
Now,when I say "focus",you know what to focus on.