Self harm scar removal

I have self harm scars on the inside of my forearm. They're about 7 years old. I got a tattoo to cover the scars, but I decided to get the tattoo removed because I could still see the scars. I went to London to do a treatment using a nano fractional laser. I didn't notice any difference at all a month after the treatment. I've attached those photos of my arm a few hours and after the laser.