I don't have ads on candy crush saga king

Hello @Sindu_123 there is nothing you can do to force adverts to appear in your game.

King decides who receives adverts, so you either have them in your game or you do not. Not having them doesn't mean you will never get them, but it just means you might have to wait a long time. Some people never get adverts though.

Also, if you have used money to purchase booster packages you will never receive adverts.