Rather than deleting your iCloud account, deactivating it for a short while would be a good option. Go to Settings on your iPhone or iPad, click your name, and tap iCloud. Then disable the toggles for various services such as Photos, Contacts, iCloud Drive, and Backup. Another way is if you scroll down and click on Sign Out, you will be able to keep your Apple ID active but stop the device from syncing. When you see the prompt, decide to keep a copy of the data that is on the device. This way is perfect if you are wondering how to deactivate iCloud without permanently removing the account, since you will be able to turn services on again even after forgetting about the information stored.