flatpakcommand at the end of this step.
In order to install Pretzel with GNOME Software, launch GNOME Software, which is called just Software, search for Pretzel and finally click the Install button.
Alternatively, launch a Linux terminal emulator and type the command below and press the Enter key to install the package.
flatpak install nuvola eu.tiliado.NuvolaAppPretzel
Alternatively, you can launch Pretzel from a terminal:
flatpak run eu.tiliado.NuvolaAppPretzel