Hello @tomcass240, you need to be more specific as to what packages claim to be unavailable.
Did you add 32-bit arch first? sudo dpkg --add-architecture i386
Hey I managed to get it installed. Not sure why it wasn't installing before and not entirely sure what I did to fix it, I run a few commands and it seemed to install fine after running:
sudo apt-get upgrade steam -f
sudo apt install nvidia-driver-libs:i386
Nothing extracted yet.
Your system information
Can't install steam on Debian 12 (Bookworm) using apt install steam-installer. Running that gives a warning that 32-bit libraries need to be installed, but they're not available for bookworm. Therefore running steam-installer eventually throws up an error that it can't install without the 32-bit libraries.