Has anyone done photorejuvenation? Can you tell me the results?

I did it seven times, which is one course of treatment. It was also because of a sudden acne on my face, leaving a lot of acne marks. After seven times, there was no effect. It took more than a month. Afterwards, my skin became a little softer, but the acne marks were still there. The doctor at that time said that it would become much lighter, but I only lost a little bit of it. I was treated in a large hospital specializing in plastic surgery and it still looked like this. I was so disappointed. I spent so much time in vain. Much money