Changing name

Help, I actually can't with this anymore. I hate my name so much, I always have. It's a pretty name I guess but it's so common and there's at least seven people in my year alone with the same name as me. It's so embarrassing when people call my name but they're calling for some1 else and I answer. So now I don't even answer to my own name bcz I know they're most likely talking to some1 else. And now whenever someone does call my name for me, I don't answer and now in class I get accused of listening to music because. "I can't hear them" but I clearly can, I just thought they were talking to some1 else.

I want to use my middle old woman middle name instead😭🙏