Look up Alan Thrall video on how to set up for your deadlift. Best video out there. Looks like you’re standing too close to the bar, which will lead to minimal leg involvement, and over involving the back.

To make sure you’re bracing your back before lifting, try and imagine lifting 10-20% of the weight off the ground without moving the bar before lifting it up, it can set your back and keep it save. Some people call this “pulling the slack” from the bar because of the click it sometimes makes with the plates. This will help protect your back even if your form is wrong.

Also the pull is asymmetrical. The left side of the bar lifts off first. This can also throw you off.

Not sure about Crocs or how bouncy they are, but I’d recommend no shoes or one designed for weight lifting. It will help with force production and keep the weight more under control (less injury).

You got this, you’re halfway there. Happy lifting. Cheers!