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Flatpak RetroArch on Flathub:

flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak install --user flathub org.libretro.RetroArch
Update to the latest stable:

flatpak update --user org.libretro.RetroArch

/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=retroarch org.libretro.RetroArch

~/.local/share/flatpak/exports/share/applications/org.libretro.RetroArch.desktop

[Desktop Entry]
Version=1.0
Name=RetroArch
GenericName=RetroArch
Type=Application
Comment=Frontend for emulators, game engines and media players
Comment[ru]=Графический интерфейс для эмуляторов, игровых движков и медиаплееров
Icon=org.libretro.RetroArch
Exec=/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=retroarch org.libretro.RetroArch
Terminal=false
StartupNotify=false
Keywords=multi;engine;emulator;xmb;
Categories=Game;Emulator;
X-Flatpak-RenamedFrom=retroarch.desktop;
X-Flatpak=org.libretro.RetroArch