You may delete your account by going to Player Settings >> Account Settings and there you may see the Account Deletion option.
If you choose to delete your account, it will delete your progress on all the servers connected with the same Log in Method (Google, Apple, Guest) and will remove any account created even if they were located on different servers.
Kindly note, the process of data deletion might take up to 30 days. Once the deletion has occurred, all game data, including in-game currency and purchased content will be permanently deleted. This process cannot be undone.
*To cancel the account deletion, once initiated, log in with the same linking method to your account within 30 days.