Most Chromebooks should be able to install some kind of Linux, even if it isn't a distro "optimized" for Chromebook.
I blew away chromiumOS on my CB3-131 and installed straight up alpine linux on it. Onboard audio didn't work (USB DAC works fine), but to my most other things (graphics, WiFi, etc.) did work. It definitely varies from model to model, but you could get lucky.
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