Non-surgical Options for Loose Neck Bands?

You have have several procedures, all with "bad results". Your cheeklift left you with a shapeless face. Your liposuction of the neck left you with neck bands. The laser did a bad job on your acne scarring.
Why do you keep having more surgeries?
Ideally, surgery is to fix a defined problem. When it is performed too early, or for marginal indications, patients will not see that great transformation that many of them hoped for.
If patients' expectations are too high, no matter what the outcome, they will be unhappy.
Facelifts and necklifts on very young patients will have subtle results; that is the nature of our field. Patients who expect huge differences at a young age may be disappointed by their procedures unless they adjust their expectations accordingly.
An under the chin neck lift will likely tighten the muscles below the chin but it appears there is a small amount of extra skin. This is best treated by a facelift, but the expected results are small, and even in the very best of hands, the neck may still have a little extra skin that appears at 3 or 4 months postop.

"Injecting soft fillers like Belotero in this area can reduce lines, wrinkles and folds as well as improve skin texture with long-term collagen production. Fillers are being used more frequently to contour and lift rather than solely line fill. Of course, fillers are best used in combination with lasers and microneedling​ with PRP to get the optimal outcome.

I suggest getting a formal evaluation with a cosmetic dermatologist to create an individualized treatment plan that works for you. Best, Dr. Emer"

It seems as if your focus is on your neck, yet you undergo procedures that do little to improve the neck. Total FX, Restyylane and a midface lift are not intended to acheive any neck improvements.
There are few non-surgical options to the neck that will reliably produce a result. If you have bands that worsen with talking and facial animation, Botox amy achieve some improvements. Restylane in the prejowl area may also give you the appearance of a stroinger jawline which may conceal a weak neckline buta will do little to tighten the neck skin.
There are many options when it comes to surgical correction of the neck and this may include augmenting the chin or performing a short scar face lift to help inmprove the jawline as well as the neck.
I would generally aovid skin tightening lasers/IPL/readiofrequency as they tend to produce results that do not typically meet patient expectations but if you are strong on avoiding surgery, this may be your best option but do not expect dramatic results.

Unfortunately, you have the kind of neck that makes neck liposuction something I rarely do. If it is done aggressively you can end up with scar tissue bands that are very visible especially when you tip your head back. Also, if your skin elasticity wasn't great, you can end up with looser skin than when you started. You are young for platysma bands so I am assuming that what your pictures show are the first two problems.
So that you finally get something that really shows a difference compared to the other treatments you have had, please save up for a properly done neck lift by a real Board Certified Plastic Surgeon. Take the time to interview many doctors and wait until you find the one who listens to you and can show you many pictures of results like what you want for your neck. There is nothing short of surgery to fix what you have so please don't waste your money on non-surgical treatments of your neck.