I think DDG is not trustworthy, but I also have some concerns about Startpage, back in the day they did a shady deal with System1, an advertising company that has a horrible privacy track record and has enough actions to make decisions for Startpage.
Nowadays they claim they are in control and nothing has changed, it is a matter of taking their word for it.
I really want to know what people think about Swisscows, it looks promising and is almost unknown. The bad thing is that it depends entirely on Javascript.