Are there any good treatments for whitening and improving skin tone?

Hello

I recently went to the beach with friends this summer, and even though I applied sunscreen diligently, the UV rays must have been so strong that freckles and blemishes suddenly popped up all over my cheeks.

They were faint to begin with, but they've become incredibly dark in the sunlight, making my face look patchy and not clear at all. I have a screenshot of a review for blemish laser toning on a beauty app that I keep checking. Can these fade quickly if I get Pico Toning or laser toning?

My skin is on the thinner and more sensitive side, so I'm hesitant about lasers that are too intense. If there are any treatments that are effective for whitening and improving skin tone with minimal pain, please recommend them if you have experience!