What is the best way to treat skin pigmentation?

Skin pigmentation treatment I have a question about this

I have acne on my face and the spots have become discolored and dark.

The freckles are also getting darker

For skin pigmentation treatment Please recommend a good laser

I'm using whitening lotion, ampoule, and ointment, but I feel like they're not enough.

For skin pigmentation treatment What do you like?

If I receive it, how many times do I have to receive it?

How often should I receive it?

I want to have clear skin.

Bright and clear skin

How much will it cost?

Please recommend