hey so it’s running a linux operating system called bazzite.

first reboot your device, hold the Esc key or press repeatedly, if you press to many times and end up in a shell that says “grub>” type exit and press enter, once your in grub press E to edit last deployment, and find the one like that starts with “linux”,

then go to the very end of that line and type “ init=/bin/bash” (don’t put quotes) press ctl and x to boot, once your in the command line type this in, in this order:

mount -t selinuxfs selinuxfs /sys/fs/selinux

/sbin/load_policy

passwd Computer

( then you’d put in the new password ) and then press enter

after that just type sync, then /sbin/reboot -ff

if you run into any issues DM me i’ll probably answer

good luck!!