Hardening does not start at choosing the right tools or networks, hardening begins with gathering information to inform yourself and others in order to stay up-to-date so that you can deal with current and upcoming threats. Tools, extensions and Co. are just a workaround until someone build the right system, that starts by voting and supporting the right politicians and organizations.
Firefox also requires setup (installing uBlock for starters). I find that setting up Brave is not any more work, and then it is indeed a pretty good browser.