Ah, I didnt know finding system info on Chromebooks was difficult. Searched for it, and installing an app from the Google webstore seems to be simplest way for it: https://support.google.com/chromebook/thread/15471099?hl=en
A good way to setup required dependencies in general for games on Linux is to install wine. If you can tell the CPU architecture, it would be easy to figure out the next steps. https://wiki.debian.org/Wine#Installation_on_Debian_Jessie_and_newer
(x86-64 = 64 bit , x86 = 32 bit)
After basic dependencies are present can install the itch.io linux app as posted earlier.
Good job persevering! For a beginner its a lot to process and understand.