These look better in terms of the balance being on your mid foot. You're running into some issues with setup consistency during the set, though. Note how in the first rep you get your setup, then pause, then set your back. In the later reps your setup is never fully locked into place and squeezing starts to happen. This causes various things like your hips moving, the bar moving forward, etc. Try and keep the setup distinct from the squeeze/back flattening.