...and you can use Bing as a backup to DuckDuckGo, because there is a search provider agreement in place with Microsoft.
The results between Bing and DuckDuckGo are usually identical, but I haven't checked in a few months. I wonder if the metacharacters work the same on both sites.
It's also nice that Startpage finally stopped blocking Tor browser. I use it much more now.
I use https://www.startpage.com/ as fallback when duckduckgo fails, because it gives the same results as Google. You can use searchstring !sp in Duckduckgo, to switch to Startpage.