I cant run steam

i download the steam from the app center when i want to launch it it dont launch help i unistalled it and installed it again but its same

please . . … . . . . … . .

  1. Open the application called ‘Terminal
  2. In this application run the command:
flatpak kill com.valvesoftware.Steam
flatpak update --appstream && flatpak update -y
flatpak run com.valvesoftware.Steam --reset
eos-updater-ctl update
flatpak run com.valvesoftware.Steam

it gives me this error error: app/com.valvesoftware.Steamflatpak/x86_64/master not installed

  1. Open the application called ‘ Terminal
  2. In this application run the command:
flatpak install flathub com.valvesoftware.Steam -y

nothing happend when i run this command

i try this again and itgives me this error error: app/com.valvesoftware.Steam/x86_64/stable needs a later flatpak version (1.0.0)

According to your screenshots, your Endless OS version is rather old and does not support Steam anymore. As you have updated your device with the commands given by Leandro, you need to reboot for the new version to take effect (3.9.3).

If however after a reboot your device is still on the old version, please run:

sudo ostree admin upgrade

and reboot again.