How to fix looking old at 27? (Photo)

I’m kind of at a loss- I have been getting comments saying I look 40+ and it’s stressing me out. I don’t specifically know what the issue is but I feel as if it’s my lower face and the lines. I lost 45 pounds rapidly and I feel as if maybe my skin elasticity is to play… I do have jowls but I’ve had them since I was a kid so maybe I need that fixed 3: I don’t know much about procedures to even begin what to research I just can’t stand looking like this