I think im losing Karma. What do you think?

I am a sophomore and I go to JLHS High School in North California. I came to JLHS and on January. I came from AB Miller High School down South California. I had a good life back in South California til my mom sended me to my step dad in north California. At first I thought life was going great becuase I am reunited with my dad but when I came to school at JLHS things went a little weird. I promised not to screw up but then I made some accidents that I regret. I am hispanic and most people I know say racial slurs about my race. I even forgot how to make friends now that I moved to a new high school. I tried being friendly but the people I talk to make it look like a joke and sometimes i have a thought that I am bugging them. Sometimes the people i talk to act like idiots and I hate to pretend to fool around and joke around so I can be on the same page with them. I thought in the beggining they were my friends but I guess they never were. Now I feel like Im happy to be capable to get in a fight, especially make wresling look like a fight. I even feel like ignoring more people. I once wanted to go behind an asian kid and choke him til he sleeps or probably felt like choking more. I want to be a Marine and this behavior that I have makes me think this is perfect for killing in combat. Anyways I am capable of becoming a cruel person and I am here to ask that can this behavior prepare me to fight in combat in the USMC?