I'd like to inquire about a procedure to add volume to my sunken cheeks and nasolabial folds after dieting!

I went on an overly intense diet recently. While I'm glad I lost body fat, my face suddenly lost weight along with it. ㅠㅠ My cheeks, in particular, have lost fat, making me look haggard and deepening my nasolabial folds. It's really depressing to hear people ask if I'm sick or say I look older. I want to get rid of this tired look and naturally restore some volume, but I'm debating whether I should get cheek fillers or if a collagen injection like Revicol, which stimulates my own collagen production, would be better. Please let me know if fillers tend to last a long time without feeling foreign, or if the satisfaction is higher with the natural plumping effect like Revicol! I'm waiting for recommendations from those who have resolved their hollowing concerns at Maypure!