Is there any other non-invasive treatments I could do that may work better or is liposuction my only option?

I have not found any other of the several common non invasive procedures to work better on reducing body fat than coolsculpting. It is important to realize though, that some people regain fat in the area of liposuction, or in other areas, after liposuction if they continue to consume calories that exceed their daily requirements based on the energy they spend for their normal metabolism (basal metabolic rate) and the exercise they do daily. If there is an excess of calories, it has to go somewhere!The information provided in Dr. Shelton's answer is for educational purposes only and is not intended to constitute medical advice.  The information provided should not be relied upon as a substitute for consultations with a qualified health professional who may be familiar with your individual medical needs. 

Keep in mind, Coolsculpting needs a combination approach to get the most improvement and may need re-treatments to get desired results. For best results, I recommend adding radiofrequency treatments like Vanquish, Venus Legacy, Exilis Ultra for skin tightening and with Z wave/Cellutone for skin smoothing. However, a Vaser liposuction/liposculpture with ThermiRF/J plasma/Renuvion/InMode BodyTite procedure is the best combination for a toned result. See an expert. Best, Dr. Emer
 

There are other non-invasive fat reduction treatments, other than CoolSculpting.  SculpSure is another non-invasive treatment that uses a laser to heat the fat to destroy it.  There are some other devices as well, but CoolSculpting and SculpSure are the only ones I have used.