Even though what you notice is the skin, it is not really sagging skin, but normal aging of the facial tissues, that is of all the soft tissues of the face, It is significant that the photos you have posted, both this time and in the previously, do not show significant sagging, which is in contrast to your assessment as posted. While a facelift is the only way to definitively tighten laxity of facial tissues, a good facelift still has sufficient laxity to allow normal movement of the face.The time to have a facelift is when early laxity is present, with the head tilted and before the laxity is present with the head in the neutral position. To have a facelift too early is folly as there is not only the cost and the recovery but also the risk, and the major risk in your situation is of disappointment with the result, even with the best facelift performed in the world. You are young and do not seem to have a realistic understanding about what a facelift can deliver. You should appreciate the judgement of the surgeon who declined to operate on your face. The reality is that while you can see changes with the years, all of us have to accept that aging is part of living. While slowing the aging appearance is possible, to stop it is impossible and in trying hard you would end up with the dreaded artificial look. Unfortunately, the photos did not show your cheekbone structure sufficiently to know whether enhancement of the cheekbone structure would be beneficial. In general people with well developed cheekbones, not only look better, strong cheeks also slow the rate of facial aging.