That’s a weird bug. Specially if it happens once in a time! Does it send any error messages? I suggest playing without internet connection.
I’ll remove unnecessary network connections in Backrooms, Dasher and CAB in an update…
I don’t have any chromebook to test this, but Unity doesn’t support chromebooks.
I suggest that you play Backrooms on other supported devices (Windows, Linux or Mac) or try to emulate the Linux version of it in your chromebook:
https://support.google.com/chromebook/answer/9145439?hl=en
I have no idea that this will work or not, but see if you have a chromebook that has graphic hardware acceleration enabled for linux first before emulating.