When I started using DDGo some years ago I had the same problem; not quite so relevant search results. I think this is not the situation anymore, the results are very good. And you dont have to worry about security.
If the search results aren't relevant, you can always add !g to the search and force it to go to Google. They may still not be as relevant, of course, because Google can't use their data about you to filter the results to what they think you wanted. Which I'm perfectly fine with. I'm happy with the allegedly sub-par results that are displayed because of my anonymity. Others may not be.
