The ability to squat with proper posture is important for basketball success, as shooting, stopping, defense, rebounding, jumping and more depend on the squatting movement. Some basketball players struggle to squat properly, often because they lack hip mobility.
The first video illustrates a series of exercises that one can use to improve hip mobility:
The second video illustrates hurdle drills that one can use to open the hips.
The third video illustrates a hip mobility series: