I'm using Firefox, due to the cross platform support, and its a bit more privacy minded then google. I do find that there's some websites that don't play nice with firfox however.
Firefox: mainly because of gesture support, containers, and uBlock Origin. I occasionally look at Safari, but as well as lacking gestures, it lacks decent cookie and site data management – basically, I want to delete everything except for a list of exceptions. I wouldn't touch a Google product with a barge pole.
Safari - has been my primary since its introduction. I have Edge installed as a secondary browser mainly for accessing client 365 environments to keep separate from my own 365, and for the rare occasions a site has issues with Safari.
duckduckgo is my primary browser, although I also use a little Safari, and some Firefox. Tor when appropriate. That goes for my Macs as well as my iPhone.
Have always bounced around between browsers but got hooked on Arc. Have been using it as my main browser for a year or two now and can't really see myself using anything else.
Safari 95% of the time. Microsoft Edge the other 5% -- for the (very few) websites that don't play nice with Safari, and because I really like how well Co-Pilot is integrated within the browser. Also gotta say -- Edge looks awesome and "feels" far more advanced than Safari.
Vivaldi. From the original creator of Opera. It's Chromium, so I can use any extension/addon available for Chrome. I prefer to customize my browsers and Vivaldi is the latest one on my current Macs that allows that.
Firefox is my choice although they keep sneaking in performance crushing changes like AI with nothing in Preferences UI to opt out. So I might look more at Vivaldi.