In order for us to provide better support, we need to see the log generated by citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File
What wall of code? Did you follow the guide I linked on how to open AppImages on Chromebooks?
Does the wall of code appear after you typed sudo apt-get install nautilus in the terminal? If yes it asks you for permission to install nautilus. Type y in the terminal and press enter.
i can open and use citra with the app image program given but my game is not listed and when i try to open my game in the files with citra it defaults to the old citra and crashes at the telemetry pop up