Serious side effects such as skin necrosis after thigh liposuction

Is there a high probability of coming? ㅠ Side effects such as sagging buttocks, bumps, and fat gain are very common side effects, so I'm considering them all, but the worst side effect is skin necrosis, and I wonder if these side effects are also very likely. I'm so worried. I heard that in the worst case scenario, it could lead to skin necrosis,,,ㅠㅠ I made an appointment for thigh aspiration next month... ㅠㅠㅠㅠ Also, I wonder if the burning, hot, and tingling pain in the surgical area after surgery is normal pain. I read some reviews that say it is burning and tingling...
 And is a guardian really necessary on the day of surgery?? It is said that it is good to have a guardian because there are cases of people collapsing after inhalation, but since the surgery is done without the parents' knowledge, it is not appropriate to ask friends, so it is difficult to find a guardian.