@Rhythm-the-Writer Hi :) First of all, I'm really sorry for what you are going through, and I can imagine how horrible it is. I know what it's like to feel that no one wants to hear you, or that what you say isn't important so why try. But if you have that one friend who is willing to listen to you, don't listen to your anxiety. It's easier said than done, but it can help to let it out to him little by little as you slowly try to get used to opening up until you're eventually more comfortable. Also, unfortunately, not all parents understand or are supportive, but you can always reach out to resources like hotlines, teachers or counselors at school. I can see that you'd maybe think it's not helpful or scary or unecessary, but it's at least worth a shot. I have had an encounter once with a counselor, and I wouldn't say I'm out of the woods, but she made me want to fight and struggle to turn things around. I know I wouldn't be where I am today without her advices and most of all, how she proved to me that there are people out there who will listen and stick up for you even if they don't know you well.
Lastly, if you ever want to talk to someone and rant the hell out of life without being judged, you can always send me a PM :) Sometimes, it's just nice to vent anonymously, so my messages are open. I hope this helps :) and please do whatever you need for yourself to move forward.