What is your squat technique like?
Problem may not originate at the hip.
Deviations in technique could be where it starts.

Issue may originate at the ankle.
Squat Quick Test: Is it Tight Ankles or Tight Hips? | Community Video

IT band, glute, or tensor fascia lata, hamstring, QL tightness?
Smashing the outside of your hip is less about a specific spot for the lacrosse ball.
Freestyle the area you’ll know what needs attention once you start doing it.