['I wish i was held accountable for the office since i committed it. But my coworker was and i am depressed about it', 'Sorry to hear that. Have you talked with your coworker or boss about it?', 'No i have not. I do not know how to do this']
Well, maybe just ask for a meeting with your boss and go from there.
My coworker lost his job today. He was held responsible for the offence i committed. Now i feel bad about it.