I use DDG and what solved the problem for me are the "bangs". Not satisfied with the results? Add !g or !b to try another search engine.
Want to look at up at wikipedia? add !wiki? google scholar? !gsc . Super convenient, so I don't really care that much anymore how crap the search engine is because I can use ddg as a searching "hub".
Dies, 3Blue1Browns Videoreihe zu Linearer Algebra ist einfach Klasse (die anderen Sachen natürlich auch)