Clear iCloud Storage/Backup

Step 1. First, go to the Settings> [your name].

Step 2. Now, open iCloud then manage storage.

Step 3. In order to delete old data from iCloud, select the old device name.

Step 4. Tap on delete backup to remove everything in the respective folder.

Step 5. In case you are looking to remove current backup data, select the folder of your new data. – Under the “Choose Data to Back Up” area, tap on the options that show all apps.

Step 6. Now choose to disable unwanted apps and click on the delete option when a dialogue popup.

Step 7. Besides, you are here to know how to delete your entire data from iCloud. Tap on Delete Backup.

For more details To delete from E-mail Swipe Up