RetroArch never works right. Even once you get past the cores and all the other stupid bs, once you get to setting up the controls it never works right, most buttons just do not work in game, if they even work in the menus.
So many years, so much effort, all wasted.
It’s still so much easier to keep BlastEm, Snes9x, Duckstation and whatever else installed, so much faster to set up controls and most of the time you don’t even need to as everything works out of the box.
And yet plebbit will say nuhhh use muh libretro cores!!!1 so heckin’ wholesome Keanu chungus 100!!! I love my wife’s boyfriend!!!111 Thanks Reddit!!!
Depending on how you installed it, the installation directory and configuration might be on separate places. That’s actually common for software. So find out where the configuration directory is then you can delete it. I assume you are on Windows right? I don’t use Windows, so cannot assist with that.
Usually you don’t even need to delete the entire folder, only the main config file retroarch.cfg. If that does not help, well then you can delete RetroArch folder and try again (but then you lose all progress for games too, if you don’t backup you save files).