I have lost the list of a vast number of links on Windows 11

As if matters seemed bad, now they are well beyond that. I don't even recall what the now empty list is called, nor how to fix it if possible.

The now empty list is still accessed by clicking on the icon of a star that rests on another image at the top right-side of Firefox. to open the now empty list; even clicking on the manage bookmarks at the bottom just brings up the totally empty list. I tried looking at my Macrium backups to no avail, likely due to my having no idea what I was doing.