I stay away from proprietary stuff when there are great open source alternatives out there. A proprietary system will always be more driven by those funding it, than the needs of the user and nearly always turn users into products, selling their information.

I’ve been using Firefox variants for a while. I use LibreWolf on desktop and Mull on mobile and a self hosted sync server so it works seamlessly. There are a few sites here and there that I don’t have the choice not to use and don’t like the privacy features or don’t render properly, so I keep Chrome around for emergencies. But that’s rare, mostly government sites.