Short version: the game has no user accounts, and DONEBRO Media does not store personal data about players on its servers. There is nothing to delete on our side.
Everything the game remembers (nickname, character and cosmetics, coins, settings, match statistics, control layout) is stored only on your own phone. To remove it:
Questions about your data: Support@donebro.in. Online rooms (when available) are relayed in memory only and discarded when the room closes. If you still have a question about your data, see our Support page or the Privacy Policy.