Follow these simple steps to start using Flatpak
Flatpak is installed by default on Manjaro 20 or higher. Just download and install the Flathub repository file and the Ramatak repository file
The above links should work on the default GNOME and KDE Fedora installations, but if they fail for some reason you can manually add the Ramatak remote by running:
$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
$ flatpak remote-add --if-not-exists ramatak https://download.ramatak.com/ramatak.flatpakrepo
To complete setup, return to the download page, and follow the instructions.!