I'm not going to keep in touch with my friend
What is the reason that you don't want to keep in touch with your friend?
He's such a bad loser and he's such a coward, who didn't even try to fight
Fighting is somewhat scary and intimidating for some. I think he might have been just wanting some peace in his life. Can you help him be more tougher instead of abandoning him?
Nah. I'm going to block him out and never talk to him again.
Your friend seems like a person with low regards to having a altercation in general. People are just different. If you prefer to be around more aggressive people that is your right though.