In case your iCloud data was deleted, there are some ways for its retrieval if it belongs to the Recently Deleted category or is part of a backup available. You have to sign into your Apple account and see if your iCloud service contains this information. In case the deleted information is already removed from all backups, then it might be harder to retrieve it. Also, there are many methods for retrieving different types of information, like photos, contacts, etc. Notchox describes various ways of deleting iCloud data.