You shouldn’t have been so close. There is no scenario where you are not at fault here. Stop driving so close and stop driving so aggressively. You are a danger to others on the road - evidence being you literally hit another car. Cars can break at any time for any reason, it’s up to you to not be so close behind that you don’t have enough time to react. If you have slow reaction time, leave more space. You’re the asshole, kid!