In Canvas, deleted pages, files, and announcements can be recovered by typing “/undelete” after your course URL.
1- Navigate to the home page of your course:
2- Type /undelete to the end of the URL link and press enter
3- A Restore Deleted Items page will appear, which will include a list of recent restorable items.
Click on the Restore button for the content you wish to restore.
4- Press OK to confirm the restore of the deleted item in the confirmation dialog
5- Your restored item will be placed in its original place of the course.