because with our sports the action is on the field rather than soccer where the field is boring and you need to entertain yourself in the stands
Oh yeah but then explain baseball.
One of the most boring games of all.
And our fans do chants in every team sport including basketball, hockey (both field and ice), etc.
It's part of the game and the teams want that.
The coach for the German football national team was like "we need more and louder atmosphere at our games" before the European cup.
As a fan you are the twelfth man on the pitch. You can push your team forward.
And no the majority of fans is not there to beat each other up and get drunk. In the PL they don't sell beer in the stadions for example and hooliganism has been cracked down on. That goes for the majority of football leagues in Europe. There are still leagues with hooligans (Serbia and russia for example. But also Israel). But the wast majority is peaceful.
And in other sports it can be quite peaceful between fans. I went to a third league hockey game in december 2022 in Hamburg. They played against Hannover. The barn was full, fans of both teams were not separated and the visiting fans were up and chanting the whole game. Hannover won, but no brawl broke out nothing. Peaceful, nice people all around. My oldest brother was like "That's great I should take my son with me next time".
You enjoy the game and get sucked into the experience.
But of course you've dumbass fans that do dumb shit (pyrotechnics, throwing shit, being racist) but they crack down on that.
But the thing is, without organized fandom (ultras) a lot of atmosphere would be missing and the experience would be half of what it is. It's just part of our culture and society. And fan groups are doing good things for the community too. For example the ultras of VfB Stuttgart helped deliver food for disabled people during COVID.
A lot fight against racism and take a stance against nazism (St. Pauli for example). They call out the leadership of the club and critizise decisions (every club).
Being a fan can be more than just attending the game. You can be part of the club. And stand up for what the club should stand for.
Of course this is only possible in certain leagues and that's why the Bundesliga is highly regarded in Europe by fans, because it is not as commercialized as the PL or other leagues.
And fans respect another in most leagues (like BVB and Liverpool fans singing you never walk alone together) and even work together (protest against Monday games and more commercialisation in Germany).
And that also goes for other sports. Be it handball, rugby or hockey.