There are lots of people here to commiserate with. Lots of us are in the same shitty boat.
If you're legit having a mental breakdown you should get professional help. The shortest path to that is calling the police and telling them you want to kill yourself. They're legally required to take it seriously. If your parents are willing they could drive you to a hospital. It's super expensive if they send you to a psych ward but it beats being dead, allegedly. If you can wait long enough to get an appointment with a shrink that would save a ton of money. If you're just having a rough time right now but are still functional then this isn't really relevant to you, but it's still good information to have.
Sorry for your troubles right now. It's a shitty situation to be in, but you can get through it. If you need help, ask. If the people you ask don't listen, TELL them, and escalate it as necessary. If nothing else you can call 911. Just don't forget that help is out there whenever you need it.