Thanks for the suggestion.
I just tried following the tutorial and... it only made me more proficient at using Timeshift.
To be exact, it prompted me to create a xorg.conf file, which apparently is not in my system. I accepted and it brought me to a black screen with a black screen that remained there for 5 minutes. I force rebooted the machine and it failed to launch lightdm.service.
So USB, Timeshift and back we are.
I am afraid I am not at your level yet. Been stable on Linux since only a few months.
Thanks again though, at least I know it exists.