On Linux, that’s usually the case. Finding the config file is the problem. I suspect that’s why emulation Station isn’t working. I don’t know where that’s installed, but I’d assume there’s another configuration file for ES. It’s probably in the home directory, ~. maybe ~/.emulation_station or or ~/.ES. I don’t recall, but there will be a file structure similar to the RetroArch tree.

In either case, it would be very kind to post the full solution for the next person.