New
#1
You can click on down arrow in location bar and it will show you full path, or you can select new folder (in left tree) an Libre office will remember for the nest time.
Of course, you can always search for the file, too.
Try this: Find a file or folder - Windows Help
If you REALLY want to find a file ANYWHERE on your PC quickly, as in almost instantly (once you have run the program to create a 1st time index use either
Everything by void tools (modern GUI)
or
Locate32 (older, not maintained)
Both free. They create (quickly) and then maintain an index of all files. Search is 'find as you type'