how do i find dragonballs

Tier 1 dragonballs are from the quests. Tier 2/3 aren't in the game right now but T2 comes from hunting mobs -/+5 levels of your level. T3 is PvP dragonball hunts so you only need to worry about T1 since T2/T3 will be added and fixed later. Happy hunting :o

As Vegetto said. I also like to add that it isn't possible to always find DBs. There are Certain events for such business!
I think it used to be once every week or so for a few good amount of hours. Pros used to collect around 5 or even the whole set of 7 Dragonballs in one event, I, on the other hand, had to do it in the coarse of 3 weeks until I started knowing what was better than what!