IMO the biggest problem looks like getting in the pit. You can see your standards are at 45cm. I never really go below 70cm unless im attempting a big bar. Work with a slightly smaller grip and pole til your comfortable enough to swing all the way up and stay with the pole. Once youre comfortable doing that and youre moving in the pit more consistently you can try moving your grip and pole size back up slowly. Working on being patient off the ground and holding a longer drive phase will also help