MacOS – Make Finder Windows Tiny

• Go to List View.
• Control-click on the bar that says "Name Date Modified Size " etc.
• Uncheck all the fields (Date modified, Size, Kind, etc.)

You should now have long filenames and expandable folders.

Enable show path in the view menu (not sure about the menu names but it should appear at the bottom of the finder window) then cmd + double click the folder you want to open, in this case, the last folder is your current folder.

I made an image but can't post it :\

Edit: Image example