Why doesn't North America have god tier supporter culture like Europe? No Banners, no flags, no one sings team songs and bantz the other team in song also.

North american sports are quiet until someone scores, then it's loud for 30 seconds and it's quiet again, all you hear is "yaaaaaahhhh" "wooo" and a few claps. Literally every sport. Literally none of the fans are loud at all EXCEPT American Football. Which can get pretty loud at time when the visiting teams offense is on the field