[F30] Custom launchers not showing in Fedora menu

Hi, I have some custom launchers .desktop files in a custom directory /softs/launchers. I put a link to this directory into /usr/share/applications: # ln -s /softs/launchers /usr/share/applications/fred I am sure this worked a long time ago (maybe with KDE 4), i.e. the custom launchers were accessible in the Fedora menu. However, now, it does not work. I search a bit and tried to run kbuildsycoca5 after removing .cache but it did not work. Is it because my custom launchers are in a subfolder (well, not a real subfolder as it is a cymlink to a folder)? But I do not want to mix them with the system ones. However, when I put one of the custom launchers in /usr/share/applications, it works. Is there any possibility to have a subdirectory in /usr/share/applications? Is there any config file for that? Thanks, F