Delete old backups from iCloud Backup
Turn off backup for apps you do not need
Delete large files from iCloud Drive
Remove duplicate files from iCloud Drive
Empty the Recently Deleted folder in Files
Delete old photos and videos from iCloud Photos
Empty the Recently Deleted album in Photos
Turn off iCloud Photos for devices you do not use
Optimize iPhone Storage for photos
Delete large message attachments
Remove old texts and attachments from Messages in iCloud
Delete unused Voice Memos
Delete old notes with large attachments
Remove files from Mail attachments if using iCloud Mail storage
Manage shared albums and delete unneeded items
Check iCloud storage usage in Settings
Upgrade your iCloud storage plan if needed