I tried Microsoft's Edge browser since now when extensions in Firefox are disabled it's pretty much the same. Well, Edge has its own problems, like you can show (pin) the bookmark thingy, but you can't resize or move it to left side of the screen. Ah, 2019, the year of technology. But other than that it's quite ok, I think the font rendering in Edge is actually better than in Firefox for some reason. You can even disable Flash player manually. I wonder if there are addons like noscript and adblock for Edge as well? ps. I'm actually writing this message on Safari, but that's because I also have a mac mini.