Can someone help clarify a question about privacy and browsers?

Hello!

I have spent the last year or so really trying to learn about as much as I can tech wise. I've gone from Google and Gmail \*everything\* to \*ONLY\* using google for emails and logins (idk what else is as secure as a gmail for logins)


BUT I can't seem to understand how to have a private browser? I switched from Google to Edge to Brave to Opera to OperaGX to Firefox, back to Brave, and then back to …

browsers can emails everything gmail google hello learn logins privacy question tech