^^^^Yeah
I didn't see any big problem with the squats...looked pretty darn good to me. I don't think you'll get too much more depth out of it right now. But only go as deep as you can keep that same form...with your lower back set.
The only blantant problem is the deadlifts. And that is WAY blatant. Don't even do dealifts again until you figure out what a conventional deadlift looks like.
Sumo may be a good idea but that does not mean you can't learn and do proper conventionals. Learn them and do them first.
Really good job.
You feet splaying apart is making up for lack of range of motion. Keeping your feet in more will just make it harder to go to that position at this point.
You can stretch you hip flexors pre workout in your mobility drills as well as activate the glutes. This could help.