If you’re one of the paranoid ones, like me, and are tired to constantly start up your Firefox and change to private browsing, here’s an easy solution!
1. enter “about:config” without the ” in your URL bar
2. search for “browser.privatebrowsing.autostart”
3. change false to true
If browser.privatebrowsing.autostart doesn’t exist, then create a new boolean string called just that and set it to true!