How to overcome the fear of physical conflict/sbags?

When you find the means to move somewhere else, even if with a roommate, I would. You NEVER know who you're messing with. Even if you're angry you need to try to see it in a realistic light. I'd take some self defense cles if I were you. But NEVER egg on a fight. The best solution to your problem is to move away. Perhaps speak to your parents/guardians about it. If not, getting a job and a roommate may be a solution.