I want to add volume to my cheekbones and nasolabial folds. Please recommend a procedure!

Hello. I am writing to inquire because my face has completely lost volume recently as I have lost weight.

In particular, my cheekbones and nasolabial folds look deeply sunken, so even when I am not doing anything, I look grumpy and much older than I actually am, which causes me a lot of stress. Overall, my face has lost its dimensionality and looks flat, so I want to change my appearance to look more vibrant.

I am looking for a procedure that can naturally add volume, and I am wondering whether fillers would be better or if a procedure like Sculptra, which replenishes collagen, would be more suitable.

I would appreciate it if you could recommend a procedure suitable for my condition, the approximate treatment cycle, and how long the results will last naturally!