What is the best treatment for acne pockmarks?

My younger brother is having the formal meeting between the families soon, and he is thinking about holding the wedding next year.

However, I want to fix the acne scars left behind from when I was young and just squeezed them like crazy.

Of course, he says he is fine, but it is the older sisters' wish for him to live with slightly improved skin condition.

It lightens acne marks and tightens pores,

In that case, please recommend some good procedures.