I'm so sorry to hear that. I was horribly bullied as a teenager, for several years, so I understand verbal and emotional abuse all too well. People can be so cruel.
I was told on a daily basis that I was a "loser", and "worthless", and that I was so ugly I didn't deserve to be alive. There is no good reason for anyone to
ever say those things that to another person, but I internalised those words, especially because I was already highly self-critical before the bullying started (I've always been a perfectionist, and have always struggled with mood swings), and that became how I felt about myself. I don't think I will ever truly get over it, but therapy is helping me work through those feelings. It has really made a difference for me.
I hope you find some support here on PC!