Anyone know more ways to get diamonds without paying?

I'm a f2p player and I really want to the the latest outfit I got 5 of 10 pieces so far but I completed the event and most world quest and side quest, I'm at a loss what should I do? (also i dont have much income I'm a highschooler about to go to college in a few months and my only passive income is like a few cents on tiktok live talking or playing games ehe-)

I'm a f2p player and I really want to the the latest outfit I got 5 of 10 pieces so far but I completed the event and most world quest and side quest, I'm at a loss what should I do? (also i dont have much income I'm a highschooler about to go to college in a few months and my only passive income is like a few cents on tiktok live talking or playing games ehe-)