Firefox w/ the Arkenfox user.js is probably as good as it gets in terms of privacy. By default, this config burns cookies on exit, standardizes the time zone to UTC, spoofs the canvas fingerprint, and does other helpful things. Basically, it makes Firefox expose the same information as the Tor browser.
In addition, I block most known advertizing/tracking domains at the DNS level (I run my own server, and use Hagezi's blacklists).
Finally, another suggestion would be to block all third party content by default using uBlock Origin and/or uMatrix. This will break a lot of websites, but automatically rules out most forms of tracking through things such as fonts hosted by Google, Adobe and others. I manually whitelist required third party domains (CDNs) for websites I frequently visit.
In addition, I block most known advertizing/tracking domains at the DNS level (I run my own server, and use Hagezi's blacklists).
Finally, another suggestion would be to block all third party content by default using uBlock Origin and/or uMatrix. This will break a lot of websites, but automatically rules out most forms of tracking through things such as fonts hosted by Google, Adobe and others. I manually whitelist required third party domains (CDNs) for websites I frequently visit.