I haven't gained weight, but is Shrink Universe the surefire way to fix my jawline sagging and losing its shape? lol

My weight is exactly the same as before, but the skin under my chin has lost its elasticity and sagged, resulting in a thick, heavy double chin. ㅠㅠ Even just slightly tilting my head causes my chin to fold in two, making me look incredibly wide and chubby in photos, so it's a total complex for me. Haha. I'm looking into Shurink Universe, which is said to provide a tight, close-fitting lift that adheres perfectly even to curved areas! I'm wondering if it's true that I can return to my daily life immediately, as it claims to be much less painful than the old original laser machines with almost no bruising or swelling. Haha. I'm really worried about whether the results are truly amazing for defining my lines and lifting my V-line. ㅠㅠ If there are any先輩s who have consistently received Shurink Universe treatments according to the schedule to get rid of a double chin, please give me some real, candid advice. ㅠㅠ