Inquiry regarding treatment recommendations based on skin concerns

I went on a trip to the beach with friends a few days ago, and even though I applied sunscreen quite diligently, I must have been exposed to too much UV rays because the dark spots under my eyes and on my cheekbones have gotten really dark. ㅠㅠ I used to have a few faint melasma spots, but they really flared up this time and wouldn't even cover up well with concealer.

Every time I look in the mirror, my skin tone looks dull and it's so stressful, so I'm planning to take this opportunity to get help from a dermatologist! I saw on the Maypure board that many people are getting laser treatments like Pico Toning, but which procedure would be most effective for pigmentation that has suddenly intensified like mine? How many sessions of laser toning usually are needed to see noticeable brightening, and is the pain bearable? Please, those of you who have had it done, give me some genuine recommendations! (I'm a bit embarrassed, but here is a photo of my blemishes...)