I feel your pain - once a day you get your hopes up while hitting that "claim reward" button after finishing a quest, then uncovering less DEC than a win in battle, a potion, & either a Harvester/Nightmare/Flame Monkey/Charlok Minotaur/Chain Spinner (just a consistent rotation through those cards) lol.

Basically just gotta expect the worst but hope for the best...that way when you finally score big (...ish) you'll feel a lot more accomplished...