If you are still using #Bing, or any third-party search engines that uses it, like #DuckDuckGo, you better move to #Google, or #StartPage.
Microsoft Bing refuses to acknowledge and fix a serious bug in their system for years. You are getting less and less results if you are using Bing / DuckDuckGo / etc.
We are not talking about spam and questionable sites here, legitimate sites, even the New York Times, are disappearing from Bing results, and this is affecting DuckDuckGo, etc., which relies on Bing.
It's boggling that third-party search platforms, like DuckDuckGo, are not saying anything about it, since it started.