Error: end of file /boot/vmlinuz-6.1-x86_64

I installed and tried every kernel I the furthest I got was a login screen which would just ask me to relog in once I already had logged in.
I think my issue is the same as this thread.

At this point I want to copy the contents of my whole drive to an external and do a fresh install.

Would I use rsync to do this? I just dont understand what the path is out of my unencrypted drive once I have done the mounting and chrooting into my encrypted drive.