I suggest the OP do a search for ChromeOS in the Calibre forum ==>>
https://www.mobileread.com/forums/fo...play.php?f=166
There are several threads where folks have doc'd how they installed calibre on Linuxed ChromeOS on various devices - Lenovo tablets, Pixel fones etc. Some problems connecting e-readers Kindles, Kobos etc but they may have been sorted by now.
BR