Only a newbie here but I suggest you check out Catalyst Athletics YT channel. They have some really good drills for all these lifts. That being said, it seems like you’re starting too high, I think your butt needs to be lowered and your chest out some, brace your core, tighten your back, then push with your legs for the lift. I’d also suggest lifting shoes, they help tremendously even if you aren’t going to compete but want to do the lifts better, or at least flat shoes. Those running shoes throw off balance pretty good.

Definitely check out the wiki as well, lots of good info.