If your machine ihas a Celeron, it’s not an ARM, it’s an Intel x86 like a regular desktop.
The following looks like it could work, but verify. Try searching for articles and guides based on the model of the Chromebook you’re considering…
The following link looks like it could work,
It describes how to bbackup your existing ChromeOS in case you miht want to reload it,
Then how to wipe the drive.
Apparently, once your drive is wiped you should be able to boot into a USB device with your Install or Live OS.
I haven’t done this particular install before, so I’d highly recommend you look for articles that say they’ve installed Linux on your particular model Chromebook.
TSU