Be loud, make people laugh and smile, people like other people who can make them laugh. Truthfully, just be yourself, be yourself and the people you are like you will come and you will make some true friends
Talk to your parents and tell them how it effects you. If that is not an option, go for a walk during their fights, go anywhere else other than in the house near a blade
Talk to them and tell them that it was a hard time, and if they can’t accept it, maybe they aren’t the best of friends and its time to expand your friend list
You need to tell him that it’s not ok and you’re not comfortable with it, and if he’s good and worth it, he’ll stop