It is amazing how 3 steps can be challenging for some even though these are explained in flathub (for all major distros) 1- install flatpak which should install a pluging for gui Package manager automatically. 2- add flathub repo. 3- Configure your gui package manager to default to flathub 4- enjoy installing rhe latest software from flathub without even needing root password (except for Opensuse TW)