Would BodyTite help my butt and leg issues? Is saggy skin the issue? (Photos)

13 months ago I was hospitalised with Covid. I lost 2 stone (13kg). Despite gradually getting back to a healthy weight, I have been very unhappy with my body. My bum and legs appear lumpy. I assumed this was cellulite, so spent a lot of money on lipofirm and carboxy therapy with no improvement. I took some images standing normally and then pulling the skin upwards. It greatly improves my concerns, so it may be saggy skin which is my issue? What would you suggest for best scarless results?