I'm worried about acne scars. What kind of treatment would be best?

hello.

I am in my 20s, and while my acne has improved a lot compared to before, I am worried because acne scars persist. In particular, red marks on my cheeks linger for a long time, and I am very stressed because my skin doesn't look clear up close due to the marks.

I usually apply regenerating cream and diligently use sunscreen, but the marks aren't fading as quickly as I expected.....

So I'm looking into getting dermatological treatments, but there are so many types that I'm wondering which one would be right for me.

I would like to know which treatments are most recommended for improving red acne marks, and how many sessions are needed to see results. I am also curious if there is any redness or discomfort in daily life after the procedure. If anyone has received treatment for similar concerns or has any recommendations, please let me know along with your reviews.