The first thing to do is make Duck Duck Go your default search engine on all browsers on all devices in your life, minimizing use of Google.
Duck duck go does not have the same level of functionality as Google, unfortunately. I have had to go back to Google on several occasions last week because of that. Duck duck go has a ways to go before it can fully replace Google.
Still, I suppose, even if you replace 75% of Google use with Duck duck go, that represents a loss of revenue to Google. And the more people that do that, the more revenue lost.
Thanks, but that doesn't work on my poor old tired hardware. I've used it in the past, but every website is building marketing databases under the pretense of "security" and "privacy". DGG is no exception. My first favorite search engine was AltaVista, which was first among equals back when there were still articles in magazines telling readers where to go to find hand-curated lists of links and such. Google arrived and worked so nicely it just blew AltaVista, Lycos, and the rest out of the water. Yahoo (which was not a search engine, but rather a list of links) tried to compete via volunteer curators. Then journaling caught on (including open-source versions of what we now call social media, and that is almost synonymous with Facebook), that morphed into 'blogging, and then the amateur video-hosting sites popped up like mushrooms (YouTube won that, but there are good-sized competitors).