From the photos provided, there appears to be a deficit in cheek volume (as evidenced also by the tear troughs under the eyes), as well as the fairly pronounced nasolabial folds. Bolus injections over the cheekbones of a lifting filler, such as Restylane Lyft or Hyabell Deep, will not only help the incipient hollowing under the eyes, but will likely secondarily smooth to some degree the smile lines. Following this, filler may then be added directly to the smile folds to further elevate and smooth them, which would no doubt diminish the unwanted shadowing that so disturbs you. The results of these treatments are immediate, generally engender an immediate "Wow!" reaction and result in little to no significant downtime. Threads are relatively expensive, have downtime, and really don't last as long as promised. And the purported benefits of other expensive "bells and whistles," like fraxel lasers and radiotherapy or ultrasound treatments, are supported more by marketing hype than hard science. Make sure that you consult with a board certified aesthetic physician and ask to see his/her personal befores and afters before agreeing to proceed. Best of luck.