Check the app’s archived, hidden, or trash folders
Review notification history on your device
Check email or SMS backups if the messages were synced
Restore from a recent cloud backup
Restore from a local device backup
Use the app’s export or data download feature
Ask the sender to resend the message
Check linked devices for synced message copies
Use third-party recovery tools only if they are trusted and compatible
Contact the app’s support team for account recovery options