My legs are flabby and just stretch thinly on the skin; will Ondari Lifting restore elasticity?

Due to months of sleep deprivation and accumulated fatigue, my face feels less like it has gained weight and more like the skin itself has detached from my bones and muscles, becoming flabby and sagging. If I gently pinch my cheek with my fingers and pull, the skin stretches limply like a rubber band before slowly returning to its original state; my skin's connective tissue has hit rock bottom. It doesn't seem like I need to remove fat, but rather that the connective tissues acting as the skin's internal support have loosened. I am hesitant to undergo procedures that forcibly burn fat, fearing it would only make my face look even more gaunt and skeletal. I have heard that Onda Lifting has excellent tightening effects, stimulating collagen to make the skin layers adhere tightly together. I've heard that for people like me with thin, sagging skin, Onda Lifting helps that loose skin return to its proper place and becomes firm. Is that true?