Check the Notes app’s Recently Deleted folder
Restore from an iCloud backup
Restore from a computer backup
Sign in to the correct Apple ID
Turn on Notes sync...
Check the app’s Trash, Recently Deleted, or Archive folder
Use the app’s search feature to look for the note title, keywords, or tags
Restore from a...
Check the Notes app’s Recently Deleted folder
Restore the deleted note from Recently Deleted
Check other synced devices for the note
Sign in to the correct account...