To have a complete view of directories and files, you may install :
krusader
from Synaptic.
Hi!
The same story: KDE. It was my favorite for years, but seems the development has been discontinued and still, it is KDE based, so it installs lots of libs for just one App...
I use now
DoubleCommander and I am happy with it.
Takes some time to configure it (lots of options...), but if you have a /home partition instead of a dir, it's easy. I did it once, long time ago, and now it's OK.
I never use "TreeView" mode, but it is available and is the closest match to Krusader (I guess this is the reason I chose it...
).
So if one needs something close to WinFM,
DoubleCommander is a good choice. Combined with
QDirStat, you got all you need for easy file management.
All the best!