What is the best laser for tightening up a saggy butt? Venus Legacy, Venus Freeze, Coolsculpt or Titan?

I'm 115 lbs, 5'3, very active and do cardio every day for 30 minutes and then lift weights. For the last 20 years have been trying to "squat my a*$ off". No matter how many squats, deadlifts, hip hinges, forward and backward lunges I do, I cannot get my butt tight. All that's hurting is my hips. When I squeeze my butt, I can feel the muscle underneath but when I don't, it's loose and jiggly. I can tell I have cellulite. Any other recommendations for tightening it would be appreciated.