What types of skin pigmentation treatments are there?

I am contacting you because I am experiencing skin pigmentation that is bothering me due to incorrect methods of acne management.
Excessive extrusion and severe inflammation leave red or brown skin pigmentation, making the overall skin tone look uneven and dirty.
Skin pigmentation does not easily disappear over time.
I've been using whitening functional products at home to manage my skin, but I'm having trouble seeing noticeable results, so I think I need professional treatment.
I learned that there are various treatments for skin pigmentation, including laser toning.
I am curious about what type of skin pigmentation treatment you primarily provide for this type of post-inflammatory hyperpigmentation, and whether you have a personalized combination treatment program.