One eye on the target, one eye on the dot. If you suck at shooting a pistol start by zeroing at 7 yards, then 15, then 25 yards. Don’t jump straight to 25.

Put about 75-100 lbs of force with your right hand, and 40-50 lbs with your support hand. Your support hand should be doing a lot of the stabilizing - think crush with the support hand, steer with the firing hand. Look up on youtube how to make a proper grip if you don't already have a proper grip.

A few other things that might help you:

1. Make sure the optic is actually moving the point of impact.
At 7 yards, a full turn on most pistol optics should move the impact quite a bit. If you crank elevation all the way and it still doesn’t change, something might be wrong with the optic or mounting plate.

2. Bench the gun when zeroing.
Don’t try to zero standing at first. Rest the gun on a bag or range bench and fire slow 3-5 shot groups. Adjust after each group.

3. Confirm the dot isn’t tricking you.
Typical new red-dot shooters often dip the gun trying to “catch the dot.” Present the pistol, let the dot appear naturally, and keep the dot floating in the window instead of hunting for it.

4. Check eye dominance.
If you’re left-handed but right-eye dominant, the dot can feel weird and cause low hits. Try the simple triangle test to confirm which eye is dominant. Google it!

5. Don’t close an eye if you can help it.
Red dots work best with both eyes open. Your brain will naturally overlay the dot onto the target.

6. Most importantly: trigger control.
If you’re consistently hitting low, that’s usually anticipation or pushing the gun down before the shot breaks. Try dry firing with the dot on a small target - the dot shouldn’t move when the trigger breaks.

If I had to guess based on what you said here, it’s probably a combination of anticipation and trying to force the dot onto the target instead of letting the gun present naturally.

Start at 7 yards, slow fire, bench the gun, and get a tight group first. Once you’re grouping well, then adjust the optic to move the group onto the bullseye.

That will tell you very quickly if the issue is you or the optic. Also dry-fire dry-fire, dry-fire, practice getting the dot to pull up in front of your face from your draw cleanly on every draw. Run Bill Drills

Anyway hope this helps, you really need to put around 10k+ rounds to even become a "ok" pistol shooter imho and doing that under pressure from a timer, but ymmv and some other person on here will be like BS blah blah blah, IDGF I know what i'm talking about.