DDG and other alternative search engines went to shit in the last few years. They spit out very generic results that have nothing to do with what you're searching for.
For example, you might be searching for a text by an author, or a conversation between two thinkers, and you specify all the names or titles in the query, you use double quotes where applicabale, etc.
What you will get instead is generic pages about the author, like a wikipedia article or an obituary from MSM, or even pages about people with merely the same surname (even double-quoting the full name doesn't prevent this!). And it will be heavily biased towards mainstream sites, so the more specific and obscure pages you're looking for will be buried behind a million useless and generic pages.
Most of my searches end with not finding anything and just giving up. It wasn't like that some years ago.
I'm not sure anymore if Google is deliberately spending less computational power when queries come from these search proxies, or if Google itself went to shit by pushing MSM to the top. The latter possibility is very consistent with the general privileging of MSM across all social media to combat "fake news". It is very obvious that this is happening on Youtube for example.
I think this homogenization of the Internet is a general trend that is going on since the beginning. It started very chaotic and amateur, but now just a few websites and corporations dominate almost the whole Internet. For me it's reaching a point where I find Internet almost entirely useless and redundant, it's not much different from TV, so I might as well just watch TV instead, where at least I don't have to spend so much effort to get to the content.