Hi! The install instructions you put for macOS is what would usually work when downloading games from itch.io, but when I use it, the application can't be opened. I tried to chmod -x it from the terminal because that also usually fixes that, but it still didn't work.
Last resort - itch.io app. Downloaded that, logged in, it worked! However. When I loaded in the game, the starting conversation with the guy that leads you into the kitchen, I noticed something. There was a square piece of light that covered his face. I thought it was like an ominous game feature, but as I wandered around the game, I noticed that there were multiple of these lights, assumingly the windows? I'm not sure, but this game doesn't seem to like macOS that well.