Hey, I’m currently 13 years old and I’ve had sh problems for a while too. Here are my ways I deal with it that may be helpful for you :) first off, bracelets do wonders, and a more untraditional way is to do some art w/ sharpie over it so people think you just like drawing on yourself. Also if it’s a lesser scar you can put makeup over it. Though the biggest thing of all is to work towards not caring what people say, however that means to you. For me at least, that was the biggest obstacle on the road of me becoming comfortable with myself. For ways you can reply to those comments, I recommend saying something like “I fell into a thorn bush when I was younger and used my arm to catch my fall, though why am I even telling you this? It’s none of your business” or if you feel bold “so what if it is?” One last thing, I believe there is something that can help the scars heal, red light therapy. It is very expensive though. Anyways, I hope this helped