Lutris again help me help me

Open a Terminal, then run these commands:

flatpak remote-add --user flathub-beta https://flathub.org/beta-repo/flathub-beta.flatpakrepo
flatpak update --appstream -y
flatpak install -y --user flathub-beta net.lutris.Lutris//beta

The Beta version of Lutris is now installed on your computer.