As per the sticky: Shot best from the front quarter. Need to be able to see the lockout position, and the entire body at least from the knees up. Include the feet if possible. We’d like to see the hands, wrists, and elbows.
Your grip is too narrow, causing your forearms to angle inward in the setup instead of being vertical. Fix that and the reps should feel a bit better. However, there generally is a sticking point about halfway up, so you need to mentally prepare yourself for that point in the lift and be prepared to push hard through it. Your wrists are bending back during the lift, so that needs to be worked on as well. Get some wrists wraps. They will help.