Why people get so mad over a game?

I love playing these games and love that I know most of people but I can’t save/veto everyone in a game no matter how much I like you or we’re friends i have to choose or not do anything. If I could be loyal to everyone I would but can’t when multiple people join my game when I was in there first and people follow Kinda get mad cause i genuinely am a nice person and loyal but in games you have to choose sides if you know multiple people in a game.