Tbh there really isn't any replacement, which tells you a lot about how profitable browsers that care even a little about privacy vs browsers that are just supported by bigger companies and have better marketing. And yes, there's a bunch of smaller browsers around but they're mostly reskins and die overnight without Google and Mozilla to carry the major load. It's sad but privacy is not as popular as compatibility with every website and when you're the default, you're compatible everywhere. I've been around since Netscape and I don't see a way to change this at all. Mozilla literally relies on Google ad money to stay afloat.