On ur profile page you cn click on Clubs. Then find the club u wanna get out of and underneath it it will ask if u wanna get out of the club so u click yes
go to your profile,go down to your clubs and click on more clubs, you find the one you want to leave and click unsubscribe. pick yes to leave that club.
u go back to the cataroy that u picked and click on the thing that u clicked to join an it will say are u sure that u want tp undo an press yes and u wont be with that club anymore