I have to hand it to you, those looked really hard. I thought we might get to witness the celebrated deadlift fountain on your first rep.
You are struggling a little with positioning, especially on the first rep. Note how you push the bar forward with your shins and how your back angle move around. You consistently drop your butt a little too low prior to each rep. Do the steps in the sticky verbatim. Don't allow the bar to move. You want to get very tight. On your first rep, it looks like you don't commit to pulling the bar off the ground until a second or two into the attempt. This shit is hard and deadlifts are no exception. What kind of jumps are you making on deads? How often are you doing them? What are you squatting right now?