Knowing the exact commands you ran will help ascertain what went wrong. I think there is a way to get those from a LiveUSB.
Using chroot, it is possible to have a terminal run from a LiveUSB as if it does from your actual system. Manjaro provides a tool in its ISO to ease the process, but since you use something else, you’ll need to use the basic one.
The idea is, after you chroot into your system:
- log into your system user
- print the commands history
su --login jesse
history