I’ve added some suggestions to help track down what’s happening in the Github issue. My suspicion is that this is a 32-bit vs. 64-bit issue. The libraries it is complaining about are available in the Steam snap, but only 64-bit versions.
The weird part is that Steam also downloads and unpacks a “steam-runtime.tar.xz” that contains copies of these 32-bit libraries that I would have thought the game would see. We can definitely add the extra libraries to the snap though.