Step-by-step – VLC Xubuntu 20.04 Installation

Installing

2. 2. Setting Up Flatpak

   How to Setup Flatpak on Xubuntu 20.04

   Flatpak Xubuntu 20.04 Installation Guide

   Flatpak Xubuntu 20.04 Setup

3. 3. Installing VLC

   Then to Install VLC Flatpak App on Xubuntu 20.04
   Simply play:

   flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

   For further Insight see the Flatpak Official Documentation.
   And after:

   flatpak install https://flathub.org/repo/appstream/org.videolan.VLC.flatpakref

   The Flatpak App Setup do Not need the sudo Command because then it Runs confined into a Sandbox.
   However, you’ll be Prompted to Authenticate with your User or Admin Pass.
   Then Confirm the proposed Setup with ‘Enter’ and Wait patiently until the App is Downloaded and Installed.