Is sagging after contouring inevitable?

I have been thinking about contouring surgery for a long time and have gone to consultations.
 I consulted for 2 types of cheekbones and square jaw and almost decided on a hospital
 . The problem is not which hospital to do it at
 , but I also have serious concerns about the contouring surgery itself. Of course,
 since the bone is removed, I lose a lot of weight. It would be natural for the supporting power to weaken. Nowadays, even doctors say that there is some degree of sagging cheeks... But what I'm really curious about is not the slight sagging cheeks that may occur 3 months and 1 year after the surgery (which is natural sagging in some ways), but whether the sagging will accelerate later as I get older. I'm even more worried... I'm young right now because I'm in my early 20s, but even in 5 or 10 years, I'll only be in my 30s. I get goosebumps imagining myself being recognized by corps and lifting at that time... It's natural to get saggy as you get older, so just get surgery first and lift later~ I don't think this is too easy of a way of thinking... If you have a lot of problems like me, it's right not to have surgery, right...?