I gave up on DDG after giving it a go for a year or so ... I don't know if Google prioritises Stack Overflow or what, but that's what I'm after, most of the time, and DDG just doesn't give me that.
Stack Overflow search results are directly included on the SERP (in addition to organic web results) for programming queries. Plus the privacy aspect.
Example for "python string match": https://www.runnaroo.com/search?term=python%20string%20match
I'm the creator of Runnaroo.