Old surgical and burn scars

I have 10 years surgical and burn scars on my face which is 40% disturbing to look. Never feel confident when going out especially big raised scars need my lip. It used to be hard and swollen, hyperpigmented. I tried so many products and only a little improvement. Sometimes i need to reuse it to make it sure the scars not raising back.
At december last year i tried dermaroll by myself starting in 1mm. I just give it a go without any consult.
And i have improvement, my face now shaped, symmetrical (before its sagging on the right area where the scars stay)
The scars also not that noticeable
I cant post my pic here yet it takes a lot of courage
I tried with 2mm also on the thick raised scars. Its making blood but i feel good. The scars are lowered and i have a hope for this, that my scars would be improved in the long use.
Now its another turn for 1mm again for the non scars area. I have chicken pox also from last year- which i need to diminish.
Cant wait for the big changes on the burn scar. I will post it after some months about the improvement.

thick burn scars and surgical scars are softened and getting fade(blending with skin color). Now my chin shaped well (before, my lower lip used to covering all over the chin because the surgical scar so thick joined to my neck, so it looks like i dont have chin) now not anymore, and the scar still there but dermarolling really helps for enhancing the look. Doing it religiously, even i was not having rolling after 3 months, and the result was so good. I am not using any expensive skin product, i do masking every week with aloevera gel. i wont stop dermarolling.