There are also ways to update linux, just in case.
type sudo apt update and things will start going brrr . when it stops moving it says things can be upgraded. Next type sudo apt upgrade and it will start going brrr again. When it says "would you like to continue, Y/N" (or something like that), type yes and this is the last time it will go brrr and when it stops moving, close the terminal and everything will be up to date.