Hip abductor stretch for my level of squat mobility

I'm struggling a bit trying to find mobility exercises I should be doing to do a deep squat. I recently had slight knee pain earlier this week after doing squats because I can't do a deep squat and I read it's likely there's more force being projected to the knee also I can't really go deep enough for my glutes/hamstrings to be used enough and it's just going to be mostly my quads. Didn't have problems with the squat itself but doing a light jog the next day immediately had some wobbling/locking sensation around the right side of my right knee with some inflammation later that day and the following day. Realized to avoid jogging or using my legs the day after any resistance training on the legs. So I stopped doing any kind of squatting until I really make sure how to go about it. I was checking which parts of the body had the most problems with mobility and I believe my ankle is not the most limiting factor but it's my hips--specifically the outer hip on both the extreme right and extreme left sides of the hip as I go down. I believe it's called the outer hip abductors. I get some pain on both outer hips just a little below 90 degrees down which stops me from going down further. I had evidence of this as well when doing L-sit leg raises on parallel bars when my hips would just lock at 60-70 degree angles.

My issue now is trying to find the best exercises I should focus on to loosen my outer hips and how often I should do them in a day or in a week since i'm seeing lots of videos from GMB, squat university, and a few others but i'm not sure exactly which exercises I should be doing since they got a lot of videos that do different hip exercises and I can see dozens of variations.