Should I confront them?

So a couple years ago I was sexually assaulted in middle school by a guy who had been bullying me and sort of “grooming” me to be the perfect girl in his opinion. He told me he liked me at one point, but then he would critique my weight, looks, etc. Well one day he decided to grab me in places he had never been given permission to touch. When I brought it up to the school they only made him apologize. Years later I’m still upset about it because he got off with a slap on the wrist, but I’ve been beating myself up over all the stuff he said to me years ago. I’ve been thinking about finding him on social media and telling him about it. I know it won’t fix all those years of beating myself up, but I’ve been tortured by nightmares recently of the incident or the guy that committed the incident. I just feel like I need closure of some sort. But if that won’t work, are there any alternatives?

(I’m already going to counseling and I’m on medication for the depression and anxiety that worsened my emotions about that time.)