fight club

[draconoid]

to form a club, you can learn a fight?

[Rotem]

I'd do dueling classes but I wouldn't know how to teach people that don't understand English or how to control a large group.

In my opinion dueling requires more personal touch, it can't be taught to people who don't understand/listen to you.

In normal classes people just wait for it to be over, dueling classes are not the same, they require attention and hard work from everyone as well as a large space to operate in.
They also don't just take 5-10 minutes but can take hours and include work after-class.

At a more advanced stage it requires 1 vs 1 dueling or FFAs.
The 1 vs 1 part is hard to achieve in a large group.

Furthermore, most work is done by yourself, experience is the best teacher.

To conclude, the best way to learn how to fight is to simply fight.
In rare cases people will offer to teach you how to fight but you're better off simply fighting.
Go outside and fight people, join FFAs and HWs or any other event.
You just can't rely on someone to have enough patience to give you a few pointers.