Hyperpigmentation After 2nd Laser Hair Removal

Got my 2nd session of laser hair removal on 4th October 2021. The laser hurt a lot and mu akin looked swollen and bruised right after it. After some hours I developed black scab like marks all over the treated area which peeled gradually in the next 10-12 days and I was left with hypopigmented spots. Hypopigmented spots faded within a week and got my original skin colour.
After a month I can see uneven pigmentation marks only on the left side of the face in the are where the laser treatment was done, these marks make the treated skin look darker than the rest of the skin on the left side of my face.
Attaching images.