For reoperation, which is better, incision or non-incision?

I have a lot of scars, so I thought about incisions,
 so I went to a total of 12
 because I thought incisions
 would be the only way to do it, but they told me that only one place would be non-incision, so they told me not to make an incision. They asked me to get
 rid of all the incision scars in other places, and why do they want to do a non-incision again? He said he didn't understand.
 What should I look at to make a decision? ㅠㅠ
 If only an incision was possible, I would do an incision, but
 since one hospital said they could do a non-incision, I was wondering if I should go to that hospital.