DDG is so bad in results though it makes not using a search engine seem like a solid alternative. I remember that research from a few months ago where they compared Google, Bing and DDG to do statistical analysis of if and how much Google’s search results have been getting worse in recent years.
Result:
Google did get worse.
However, Bing and DDG got worser, faster.
The real conclusion was that SEO spam has found ways to optimize that is no longer easy to exclude for search providers. Hence all search is getting shit pretty quickly.