I have an Asus Chromebook with the Chrome / Linux options on. Linux Works very well for other popular aps but need to install natron via a command line. “sudo apt-get install natron” fails with “Unable to locate package natron”
I can only comment on the first bit “sudo apt-get install natron" If the distro (you installed) repository does not contain natron packages then ‘apt’ is not going to work. (Do any distros package natron ? There is a 'buntu PPA Natron : Ichthyostega)