Begin to feel anxious when looking at or going outside?

I'm 13 years old with a family with a huge line of mental disabilities, I have bipolar, ADHD, Tourrettes Syndrome and a bit of asbergers, I almost can't get up for school. My parents are divorced and other 3 siblings moved out, my pa is sick and almost dead, and I'm very social when in a mania phase. I don't like sharing how I feel so I'm online(Therapy isn't a possibility). I feel like I'm trapped in my own life in a way. I'm stuck at home with tv and an iPhone, am sort of poor and living in a caravan. If there is any advice for what I can do in the day, how I might be able to know if I have agoraphobia, and if there's a fix, please please help me. Again therapy isn't possible. There's almost nothing to live for. Sincerely, Heath Phoenix