You are doing it wrong

My left hand was locked on my right wrist, and I stood sideways with my feet slightly apart. I squeezed one eye shut, focused the other on a target about 40 feet away and braced myself for the kickback. I pulled the trigger, and the muzzle of my Sig Sauer 9mm flashed and jerked upward.

You Need to work on Grip, Stance, and focus should be on front sight