My only suggestion would be to go down slower. Otherwise I think you’ve got good form. Don’t worry too much about the weight. Just slowly increase the reps or weight when possible.
You might be able to fiddle with feet position to get as low without the plate. But there’s nothing really wrong with using the plate.
Are your legs/glutes sore after? That’s what really matters.
Wow 5th! I’m only at 3 with my nest. Hoping for one after this current pair.