You certainly have a right to cheer for your team but try not to become too _____ and unruly

partisan?
You told me partisan was wrong but its my only word left

Although it could possibly be partisan, boisterous is much better.

I used boisterous for The crowd is so boisterous that the umpire is booed every time he makes a decision against the home team

OK. Maybe partisan is the best word for the team sentence.

No worries! "Partisan" can actually work in this context to fill in the blank in the sentence. I apologize for the confusion. So, the sentence would be: "You certainly have a right to cheer for your team but try not to become too partisan and unruly."

The word "partisan" refers to someone who strongly supports a particular party, cause, or group, often without considering other viewpoints. In this context, it means being overly biased and showing excessive support for your team, which can lead to unruly behavior.

If you have any other words you'd like assistance with, feel free to ask!