Anecdotally Wikipedia is often the top result for me ... with the twist that it's the Google widget, with the side bar and related videos.
Only way below this block (which takes about 120% of my whole screen's height) come the "organic" results, that aren't great, but probably match what Google assumed I wanted to see.
Then consider using DDG & '!w term', or some other method (searching Wikipedia, extension, I think Firefox has something engine-agnostic built-in) instead?
Oh I do use DDG. I think it might suffer from the same problem, actually, since now I'm wondering why I see Wikipedia results very far down in Google when I don't really use Google.
Only way below this block (which takes about 120% of my whole screen's height) come the "organic" results, that aren't great, but probably match what Google assumed I wanted to see.