Best way to Install LXDE (Not LXQT) on Ubuntu 20.04

I've successfully installed LXDE (not LXQT) on an upgraded Ubuntu distribution that began as the Lubuntu 18.04 Alternative iso's command line option system (18.04 to 20.04 - Alternative Iso Page For Limited RAM Systems) This is my family's preference for our limited RAM machines. I've tried just about every other option, but we like this setup (customized LXDE on Ubuntu LTS). My issue is that building my light system of choice has become less than intuitive, and may include some unnecessary packages, as the current repositories seem to force quite a bit of unwanted software. For example, sudo apt install lxde or sudo install lxsession and other similar tactics install LXQT or Gnome. To install LXDE --

I had to install openbox (while avoiding gnome):

sudo apt install xserver-xorg-core
sudo apt install openbox
sudo apt install xinit

I then had to install several packages in a row:[update: 2020-11-02 - I've identified the key packages necessary for installing the old LXDE]

sudo apt install --no-install-recommends --no-install-suggests xdg-utils libnotify4
sudo apt install lxsession

At this point, LXDE properly installs and runs on a virtual machine, but I'm wondering if there's a better way to install LXDE on Ubuntu 20.04? Should I move to Debian?

-P.S. This installation method does not boot well on my AMD Phenom II X4 810, Nvidia GeForce 210 machine. The system hangs after GRUB, and eventually stops at the normal message concerning memory blocks on the system drive, but I have to type alt-F2 to enter CLI. Just a quirk I believe is worth mentioning.

Thank you, everyone.

Solution 1:

Install LXDE on Ubuntu 20.04

Using the terminal, type the commands below:

sudo apt update

sudo apt install lxde

When installing the display manager options will appear:

gdm

lightdm

select = lightdm

sudo apt purge gdm3 gnome-shell

sudo apt autoremove

sudo apt install xorg file-roller

sudo reboot

You will get the LXDE Desktop Environment, not Lubuntu or LXQT