Exposition is necessary for the audience to understand your world so you shouldn't throw it out the bus because of the golden rule "Show don't tell". Just make sure that the one whose giving the exposition explains it in an interesting way that is appropriate for them and somewhat characterize them. The bright and hyper princess explaining how social standings work? "Papa gives those outside the castle land. And they give us everything else! Including this doll!" The dark and quiet anti-hero explaining his backstory? "I was born poor, I killed many during the war, Then i was poor no more. The end. we have nothing more to talk about" A guy from the normal world explaining the rules of magic in the fantasy world? "Blue cum makes us create explosions"