Avalon1. Low to the left sounds to me like you are tourquing the gun when you squeeze the trigger. Grip  and trigger control are paramount when shooting a handgun. I'm assuming you are right handed! I'm guessing when you squeeze the trigger you are tightening your grip as well which is causing the gun to twist to the left in your hand. Try keeping your right hand as relaxed as possible. Apply pressure to the grip front to back with a firm but light grip. Us your weak hand to do this as well. When I shoot my PT-99 I place my weak hand thumb on the web between my right thumb and forefinger making sure it is below the slide in recoil.OUCH!! I wrap my fingers around my right hand fingers and squeeze front to back. You can practice this dry firing. It will take some trial and error to fing the right position for your left thumb as squeezing in certain spots will cause your right hand to move around. I practice my grip and after I think I have it right I try and wiggle my right hand finger tips. That tells me if I'm squeezing my right hand when I fire.
As for trigger control. Believe it or not..you can release the trigger before the round has left the barrel thus changing your point of impact.When you squeeze off a shot..hold the trigger to the rear until the gun comes out of recoil.(Follow through). I can hear the action click when I release the trigger after I shoot. Of course if you are shooting rapid..this kinda goes out the window. Also ensure you have your trigger finger in the same position everytime you take up your grip. It should tell you that you have the gun in the same position in your hand if the trigger is touching your trigger finger in the same spot. At least for me it does. Hope this helps. Dry firing and practicing your grip and trigger control will help a lot.