Knees keep travelling forward in the first video. Bend over more, and freeze your knees about 1/3 - 1/2 of the way down. Depth was questionable on a few, last one might have been too deep. Good bit of lumbar flexion at the bottom.
Second video shows you need to shove your knees out more. Knees are not tracking with the toes / feet. Shove them out harder at the bottom.
You might benefit from reading the Active Hip 2.0 article on this site.