Hey. I'm not a doctor and neither is the internet. I was diagnosed with clinical depression a few months ago and I understand how it feels.
First off, I wouldn't trust tests off the internet. So just completely X internet mental health tests from your life. The best way to self diagnose is to do some hardcore research on types of depression.
Look at me. I was diagnosed with severe depression and an anxiety disorder, but I have spent months researching a lesser known form of bipolar disorder known as cyclothymia, which entails that I will sometimes have like two or three months of deep depression (so much so that I have turned to cutting on the worst episode) but I also have prolonged (about three months at the longest, and two weeks at the shortest) of hypomanic episodes where I am very happy, helpful, self confident and overly cheery, sometimes to the point of making reckless decisions (like yelling at my parents)
I am currently transitioning into a depression episode. So sorry if I'm not exactly helpful.
Overall, I think the best option for you is to look into these things and, when you have a firm grasp on what you have, hang around forums like these. Sometimes the best medicine is from like minded individuals.
(I'm fourteen btw)
First off I want to say that your parents sound rather abusive (I have never heard of a gonk before but hitting you isn't ok) and I really think you should talk to a guidance counselor about that or something. I'm sure you aren't ugly, it's just that teenagers can be really cruel. Try your best to ignore them or if it gets bad talk to a teacher you like about it. Don't freak out about your mom trying to get you help, maybe she picked up that you were having some issues cause it does sound like you might be depressed. Getting help is not a bad thing. No, you do not always ruin things, I'm sure you do some pretty great things too. I don't know exactly what happened with your friend but I'm sure you guys can be friends again if you talk to her. Please message me if you wanna talk