Would FaceTite help me achieve a v-line? (photos)

I suggest reaching out to an expert for a formal consultation. I like to recommend my patients start a combination of facial rejuvenation treatments.

1) Skincare with products and microneedling/PRP
2) PDT Light Therapy a few times per month with growth factors
3) Laser treatments like Clear + Brilliant regularly and others (Fraxel, Moxi, Viva, CO2, Erbium, Halo) a few times per year
4) Sculptra injections a few times per year for collagen production with fillers like Juvederm, Restylane, Belotero, Radiesse, and/or Bellafill
5) Thermage/Ultherapy for yearly skin tightening with or without PDO or cone-based Instalift threads for lifting
6) Botox every 2 to 3 months to stop movement lines and prevent lines at rest

Best, Dr. Emer.

It is hard to answer based on the photos provided but it may be that you have some prominence around the mouth because of a lack of balance in your lower face compared to the upper face. It is possible buccal fat removal may have made this more apparent as I agree, 21 is too young for age related sagging.
I’d suggest returning to your doctor for ideas or finding someone who feel has your best interest at heart that you can trust to help you assess and come up with a treatment plan to help you achieve better balance.