First, look in your recent documents or the default save location of the software you used. Also, search for files with relevant names or extensions related to drafts. It's possible they got saved under a different name or in a hidden folder.
Well, you could try looking in your cloud storage if you sync your work there. Another option is to check your recycle bin or trash folder in case you accidentally deleted it. And don't forget to search through any backup drives or external storage devices you might have used.