like 99% is pretty normal, if a brazilian team won a big tournament there might be a big impromptu party in their city, during the world cup it is a bit harder because people will talk more about footbal, but like when i was a teen i wasn't big into soccer and the fun thing about the world cup is that you get a free holiday every game and you don't need to watch it i used to play games and stay up late and have a cozy long sleep during the games when they were too early, and you get to go drink with your pals and barely pay attention to the game if you want it is just a really fun time, everyone is on a good mood as long brazil is doing fine on the world cup, there is of course a bias, i naturally trained to love the ball game, it is the culture, but it is one of the funniest times to be around in brazil, i once watched a game with a whole samba school drums division, it is the second secret carnival

Edit: just wanna add one of the weird events that sometimes happens during world cup matches, if you are on a deeply populated area like generally in big cities, and brazil is playing you might be able to hear everyone losing their mind like during the one in brazil, i heard like a whole street of 10+ floor buildings ROAR in euphoria, but people were really hyped for that one, like you could absolutelly know the result of a game simply by listening to people in a window but the level of this really varies depending on place and also how excited people are for the team but it is a bit obnoxious if you are not aware of it

i guess if you hate it when other people are happy or excited about something then yeah, it would be pretty annoying