Nasolabial folds are cause by three main things
Loss of Collagen/Elastin ruby you have a good skin care routine so I don't think this is the reason but you could inject ghk-cu or micro dosing accutane or idk if you use topical trentinoid
Bone Resorption most likely not the reason
Most likely reason fat sagging
Im too lazy to write why here's got response
"Nasolabial folds result from malar fat pad ptosis following the attenuation of retaining ligaments. As these osteocutaneous anchors weaken and dermal elasticity declines, superficial fat descends gravitationally. This migration is arrested by the nasolabial ligament, creating a "logjam" of adipose tissue that manifests as a prominent structural fold."
Best ways to fix is Botox, fat desolvers and pfp threads in my opinion self injecting Botox could lower the price