never thought about this also didnt know about the ceo of this was a bad guy, you mean Brendan Eich right ?
Yes. He donates to anti-LGBT organizations and causes, he donates to politicians who oppress minorities and deny climate change, and he expresses anti-scientific views, most recently regarding the COVID pandemic. He was fired from Mozilla because of his bigoted views.
and how about chrome , its from Google thats evil also ?
Chrome is terrible for so many reasons. It is pretty much spyware at this point. It phones home to Google
constantly and tracks literally everything you do online, even as far as pre-fetching results (and logging those results) for things you type in to the address bar, even if you don't actually press enter. Google use all that information to build a complete profile on you (linked of course to any sites you log in to via Chrome such as Facebook, Instagram, etc.) and sells all that to advertisers and third parties. I wouldn't use Chrome if you paid me.
is duckduckgo also evil ??
DuckDuckGo is good as both a search engine and as a browser app.
Tor is obviously the best browser in terms of security and privacy, but many people don't like using it due to slow speed and some pages not displaying correctly. The next best option is Firefox, preferably with a small number of privacy improving extensions and tweaks:
https://www.privacytools.io/browsers/#browser