I’m so depressed

My teacher died last week and since then nothing has been the same, on top of that my family is in a terrible financial situation because my dad can’t work due to chronic pain, I’m trying to get a new job, I have major exams next week, one of my friends is suicidal, the other is developing an eating disorder and I’m convinced both of them secretly wish I would never speak to them again. I don’t know how I can keep going like this...it hurts too much and I’m so exhausted