The bulk of financial support Mozilla gets comes from Google, they stopped being a real competitor in the browser scene years ago. You don't really have a choice when it comes to modern web browsers, maybe Safari is the "safest" / most privacy-aware choice you can make assuming you already bought into the Apple ecosystem. What else is there, the crypto-mining scam that is Brave or the ProGaming WebBrowser / Chinese backdoor aka Opera?
But really, you're better off using something avangard that some nerd came up with during the weekend. At least these hobbiests' browsers can be trusted to be not be evil & greedy.