I installed Unity as default DE on Ubuntu 18.04, But nautilus really sucks on desktop management.
So I decide to make a change.
First, Install nemo file manager
sudo add-apt-repository ppa:webupd8team/nemo3
Even through this PPA is not support Ubuntu 18.04 yet, But you can still use it by change it to "artful".
sudo apt update
sudo apt install nemo
Next thing to do is set Nemo to default file manager&Desktop manager.
gsettings set org.gnome.desktop.background show-desktop-icons false
xdg-mime default nemo.desktop inode/directory application/x-gnome-saved-search
Add "nemo-desktop" to system autostart up and reboot system.
Then you had the future in your hands.