Long term solution for ugly lower face?

I perform regularly all kinds of genioplasties, not only sliding
genioplasties but also one, two and three-dimensional augmentation
and/or reduction genioplasties, plus other custom designs; in other
words, I know well what I am talking about.
Your case is the among the best you can meet doing chin surgery to
perform a three-dimensional osseous chin augmentation with bone supply.

That is the name of the procedure you are an optimal case for, since
you need: massive vertical augmentation, moderante anterior increase and
eventually certain grade of horizontal widening of your chin
dimensions.
This is an awesome, lifetime lasting, stable and safe procedure, which
notwithstanding needs very accurate preoperative antropometric
planning, desing, discussion and a brilliant execution, a technique full
of creativity and good aesthetic judgement requirements.
Chin implants have many disadvantages:
-visibility, static or with facial gestures / smiliing
-artificialness, fake look, evidence of implant presence

-limited lack of versatility, they do not provice vertical modifications neither reductions
-common infections
-common dislocations
-possible nerve irritation and pain
-short lifetime
So sooner than later they are normally removed, or exchanged by an osseous genioplasty.
Why
so popular (chin implants) then? Simple answer: they are technically
accessible to all surgeons, little training is required, can be done
under local and sometimes office based procedures, they are cheap.
Osseous
geniplasties are more expensive and need good skills, true, but when
performed they produce lifetime results, safe, stable overtime, very low
rate of complications, versatile three-dimensional modifications
(augmentation or reduction, vertical, horizontal and depth), low rate of
reinterventions, etc.
Feel free to request any additional information from me.

After assessing your photos, i would advise to consult with a board certified plastic surgeon. My recommendation would be: submental liposuction (fat removal using liposuction for the neck area) and chin surgery.Chin surgery, aka genioplasty or mentoplasty are procedures done to give people more appealing chins and a stronger profile.
There are two different types of chin surgery; however, implantation (mentoplasty) is the most common and sought after procedure. Chin implants can be removed if need be and are made of synthetic materials that are not only completely safe, but they also feel like a real chin when touched.
On the other hand, genioplasty is a chin augmentation surgery that does not use an implant. Instead, this procedure involves moving your bone forward to increase the projection of your chin.