Again: now that you can graphically log into your user account (can't you?),
you can rename the files from the file manager. You can display the hidden
file from the related entry in the menu or use Ctrl+H.
The problem related to the configuration of some application in your desktop
environment. Not to the X server (the logs you show us are OK).
The renaming procedure I was suggesting aims to find out what application
creates the problem. If you do not mind reconfiguring to your tastes some
desktop applications, then just (re)moving the whole ~/.config. Creating a
new user would mean even more applications to reconfigure to your tastes,
moving your user files and changing their owner to the new user. You had
better just (re)move the ~/.config.
