
Hi,
Yes, try to find the bookmarks/favourites folder at this location:
C:\Users\<username>\AppData\Local\Microsoft\Edge\User Data\Default
If not, then try to login using your hotmail/outlook account into the browser & sync. If the browser was in sync earlier then you should get 'em back.
For future, Export the bookmarks file in a safe place in case you have large number of bookmarks/reading lists saved.
Thanks