Uninstalling DuckDuckGo

I followed both suggestions on the above Apple Support link and neither worked:

1. Using LAUNCHPAD, the DDG jiggling icon did NOT have an "X" next to it like the others did . . . so I could not delete it.

1. Using FINDER > Apps > the DDG App icon, and dragging it to the trash didn't work because I got the following message:

The item “DuckDuckGo Privacy for Safari.app” can’t be moved to the Trash because some of its extensions are in use.

So then I went to Preferences and clicked on EXTENSIONS, and there were NO extensions listed.

HELP!

Thank you John. That worked.