HELP! Directories location problem, Audacity wont launch [SOLVED]

You can reset the Audacity preferences by deleting the file “audacity.cfg” (the file is recreated with default settings on next launch of Audacity).
See here for step by step instructions: https://forum.audacityteam.org/t/resetting-audacity/50613/1
(In your case, you only need to delete the one file “audacity.cfg”)