Should I just let everything get worse and make everyone around me suffer?
Probably should not. Why do you want people to suffer?
I like how loud their voices get when things are going wrong.
It is wrong to wish suffering on other people. You should try and make everyone's lives better if you can.
I'm only doing this so that I can let people know how selfish they are.
No matter what reasons you have, it is not good to want to wish them to go through bad things. People will think you are the selfish one.