I’m no expert but this should be useful: https://www.makeuseof.com/tag/duckduckgo-search-tricks-student/
In my recent experience, it recommends shitty blogs loaded with adverts and keywords. Most annoyingly, it always recommends Fandom’s Wiki above better alternative wiki sites. My DuckDuckGo experience has surprisingly been more useful.
That aside, my Brother laser printer is still working great. No complaints.
If you’re on the billionaire whitelist, you pay even lower than the people in poverty.