@Zanna regarding [this](https://askubuntu.com/a/988021). I'm about to post following comment:
Welcome to Ask Ubuntu. I'm sure you are trying to help, but telling someone to just google for is not the format we expect as an answer. So my suggestion is to provide an actual step by step instruction how to delete the configs or how to start off with a fresh user directory.
Any thoughts on that before i hit send?