Learn the trigger brother! once you know how to deal with Glock trigger, you will love it.
Trigun
I think this is the right advice. I started out with GLOCK 17, sold it, then went through a long time where I had no GLOCKS and I thought they sucked. Then I got a GLOCK 19 and, with some practice, learned how to shoot it. I have a GLOCK 19 with the 3.5 connector, but I have several other GLOCKs without it, and in the future I will be moving away from the 3.5 connector altogether. I don't need it any more. I can shoot my GLOCK as well - or better - than any of the pistols I have tried (and I have tried a lot of them, as those that have seen my Youtube channel will know!)
Some people will disagree with what I say, no doubt, but this is what has worked for me with GLOCK:
1. You know the old thing about "squeeze the trigger, slowly, don't pull it!" Well, forget that with GLOCK. It's bad advice. If you are trying to finesse the trigger on a GLOCK the way you would on a finely tuned 1911 trigger, or even some SIGs and other guns, forget it. You will not have success with a GLOCK like that. What I like to think in terms of with GLOCK is: (a) firm grip; (b) high grip; (c) right (dominant) arm straight; (d) look "down" the gun and focus on the front sight. Forget the rear sight, and if you still have that stock plastic rear sight on there with all the white on it - get rid of that. Get Trijicon night sights. That's what I like; (e) take up the trigger to its break point and pull it back, shotgun style, with some authority. You don't have to use the very tip of your finger, and do
not try and finesse it with as minimal force as possible; (f) use the trigger reset. The reset is one of the best features of the GLOCK.
This approach has worked for me. I can now shoot my GLOCKs, especially the 9 - but it works with the 40s and 45s as well - fast and very accurate.
Remember, GLOCKs are actually very accurate. It is not the gun, the barrel, how you are cleaning it or any of that. It is what you are doing with the trigger. It sounds to me like you are trying to finesse the trigger. Save that for you 1911's!!! GLOCKS, grip it hard, keep your dominant arm straight and let 'er rip! They are made for fast accurate shooting, and they are a great design.
[Disclaimer - I also own and love SIGs, HKs and other types of firearms. 1911's, CZs, Beretta's, etc., all are good. GLOCKs are not perfect or better than everything else. All I am saying is that they require a different mindset that other pistols if you want to shoot them well]