You can earn small amounts of Play Store credit by answering surveys, which can be used to buy Diamonds.
These are unauthorized, modified versions of the official game client. They typically promise features that are locked in the standard version, such as: Unlimited Diamonds and Gold : Claims to provide infinite in-game currency. Unlocked Skins and Characters You can earn small amounts of Play Store
Let me know if you need any more information. You can earn small amounts of Play Store