I checked my settings while on vpn on the website panopticlick and while I'm mostly good, my browser fingerprint is "unique".
not that I have anything to hide but I like being private. It's supposed to be a right in the Land of the Free and the Home of the Brave...
I tried turning off javascript through about:config but it just breaks sites-like this one.
uMatrix will help, but the learning curve is steep and the effort to get it working is large. But, once you have it working - you can save your settings, export them, use them elsewhere, etc...
Basically, it's like an old-school software firewall - but made specifically for your browser. It will take work to configure it for your favorite sites. After that, you'll block (by default) most fingerprinting techniques. And, it's pretty much on a site-by-site basis... So, you gotta configure it until you're reasonably close to done and then you hardly ever touch it again - except when you visit new sites.
Once the work is done, it's not bad. Also, sharing rules is pointless, 'cause everyone visits different sites and has different needs from those sites. It's a great idea, just a bitch to set up. Just keep configuring the sites as you encounter them and eventually you stop having to do it. Not gonna lie, it's a pain in the ass.