Check recent items: Check if the deleted emails are still in the ‘Recoverable Items’ folder in Outlook
Check ‘Deleted Items’ folder: Check if the deleted emails are in the ‘Deleted Items’ folder. If they are, select the emails and press ‘Move’ or ‘Archive’.
Check for backups: Check if any backups of the emails were made. If yes, restore the emails with the most recent backup.
Use an email recovery software: If none of the above options work, you can use a third-party email recovery software.