DuckDuckGo is the best alternative for English language search. Expect okay results, just don’t expect privacy. For privacy, try Qwant or Ecosia.
When asked about the algorithm Mark Zuck’s response was “amateurs”.
Only you can decide if being spied on by the US government or the Chinese government is worse for you.
Imagine what would happen if China arrested Tim Cook or Ivana Trump? That’s what the morons in Canada did when they snatched Meng Wanzhou.