I'm not by any means the ultimate expert, but I have two suggestions to try out. Squats should be addressed by someone else who knows more, but your stance seems fairly wide to me. Maybe try narrowing it a little and see if that makes it easier to hit depth, wider stances can make the hips seize up.
For the deadlift, again narrow your stance or pull sumo. You want your feet under your hips or way out, this gets you closer to the bar, and reduces the amount of force you lose via sheering on the closer foot position. This force reduction is more easily dealt with in the sumo stance as you have a much shorter distance to pull in general.
Anastas Dimitar Martin