I almost exclusively use Duck Duck Go (https://duckduckgo.com/) as an alternative to Google. The only time it doesn't give me the answers I need is occasionally for code / bug related searches, in which case I go back to Google.
But truth to be told, DDG is so handy with the shebang keywords, I search Google using it and only leave DDG in my Firefox search bar and specialize with !g !gv !gi as needed.
github? !gh
wikipedia? !w
youtube? !yt
google? !g
images? !i
and there are tons of them!!