Over the last 12 months, our apps have been downloaded more than 50M times, our search traffic increased 55%, we became the #2 search engine on mobile in U.S., Canada, Australia The Netherlands & other countries, and our estimated user count doubled to between 70-100 Million users.
I think searx would fit that definition. is FOSS, self hostable, and in my experience (of 2 days searching with it xD ) its results are better than ddg.
there’s also a tutorial about choosing a random instance for each search here. the only problem is that some instances don’t function well. so you might need to search again.
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I mean ddg is also mostly Bing results, and when bing’s policy changes it affects ddg, so searx can kinda be similar?
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You could also use the Privacy Redirect extension, which amongst other things can redirect your search engine to more private ones. In particular it has various instances of Searx, and rotates randomly among them