The tags section.

just search your bias and via the tag section, find stories about them!

and if you keep complaining that there's not enough fanfic writers from you fandom, maybe you should wish to contribute and write too!:)

You cannot force people to write fiction they do not wish to write. It's up to peoples choice whether or not to write a particular fanfic about whomever they wish, not yours.

Another option is to host a competition, and put the group that you wish these authors would write about

you can also try reading or requesting from request shops too!

so please, stop saying people need to stop writing EXO. It is their own choice!

(however, EXO fanfics... Some are reaaaaallllllyyyyyy bad.)