What can be done about deep Nasolabial Fold wrinkles?

I have deep nasolabial wrinkles in my skin even when at rest. They are etched into the skin and not just a shadow. I have spoken to 2 injectors and they have advised against filling them as it will create an unnatural look. I was suggested to try skin-needling. I have had 3 sessions and seen no improvement yet. What else can be done to soften my nasolabial creases? Thank you