I am considering fillers because my nasolabial folds are deepening. Will they really have a youthful effect?

I'm worried because the nasolabial folds around my mouth look particularly deep, perhaps due to a loss of elasticity. Every time I look in the mirror, that area looks shadowed, and it makes my overall impression look stubborn or older, which is completely stressful.

Even after applying generous amounts of expensive functional cream and doing firming massages, I felt there was a limit to how much I could do for the deeply sunken areas. So, I am planning to get a filler treatment that can instantly restore volume.

From what I've heard from those around me, injecting fillers into sunken areas definitely makes wrinkles fade, softens the facial impression, and gives a younger look.

For those of you who have received nasolabial fold fillers at a dermatology or surgery clinic, how long do you actually experience the volume retention and how satisfied are you? Does it fill in naturally without any foreign body sensation?