for the hips your going to have to release the glutes, every area there, upper side and inner of thigh, adductors long and short, and the upper hammie area.
then stretch both the long and short adductors
it is a lot of work, for many weeks/months, but necessary.
I had FAI hip pain so bad that walking up stairs, landing from jumps and squatting hurt a lot.
Now nothing
mostly due to tons of knots and sore spots in my adductors, inner groin area, and those muscles being super tight.
Not many people stretch or work on their adductors, it gets worse over time.