Are you sure it is installed? If it's installed, it should say it's installed like it does on my system:
xdg-desktop-portal-gnome/jammy,now 42.0.1-1ubuntu2 amd64 [installed,automatic]
Please run this command to fix your issue:
sudo apt install xdg-desktop-portal-gnome
Are you sure it is installed? If it's installed, it should say it's installed like it does on my system:
xdg-desktop- portal- gnome/jammy, now 42.0.1-1ubuntu2 amd64 [installed, automatic]
Please run this command to fix your issue:
sudo apt install xdg-desktop- portal- gnome