Downloaded sims 4 custom content but not accessible in the game

@pugicornlover  That means there's already a Sims 4 folder in Documents\Electronic Arts if you're going with the first option, or an Electronic Arts folder if you're going with the second option.  Either way, there can't be a folder with the same name in the same location where you're trying to create the symbolic link.  So please move that folder elsewhere and try again.  There does have to be a folder in the destination, i.e. the external drive, for the symlink to point to though.