Use DuckDuckGo ... end of problem.
DuckDuckGo isn’t a browser. It’s a search engine. I really like it, and use it, but it isn’t gonna solve this problem unless you use is correctly, to search. Like I did. This isi what I got:
https://blog.mozilla.org/addons/2019/05/04/update-regarding-add-ons-in-firefox/
Yeah... Firefox isn't a search engine.
So...