What is the most "private" browser available on mac?

Hey guys,
I rececently started looking into privacy on the internet and want to start by now.
I am searching for a decently comfortable browser to use, which has set its privacy and do-not-track standards (and what else there might be) quite high....
Well guys, maybe you have got some valuable tips for me.

Thanks so much and have a nice day!

browser mac privacy