If none of these work, the file may be permanently lost – but or a cloud backup (Dropbox, iCloud) is your final hope.
/private/tmp/ or /private/var/folders/
Same "Go to Folder" method – paste: ~/Documents/Adobe/Adobe Illustrator 27/AutoSave/ adobe illustrator recovery file location mac
These files usually have the original name plus _recovered or a timestamp. Illustrator may also write temp files to: If none of these work, the file may