Is this under the chin skin/fat fixable without surgery?

My entire life I’ve had extra fat around my face/specifically basically no jaw line behind my chin and I HATE IT. I am 5’7 and 130 pounds, not overweight at all, and the second photo I was 5’7 and 105 lbs!! Would mewing help this? Posture stuff? I am not a surgery gal but I do hate this so much in every photo