Is Firefox actually private?

Related questions

1. Does Firefox focus have tabs?
2. Can you open multiple tabs in Firefox focus?
3. Is Firefox Focus safe to use?
4. Is Firefox focus really private?
5. Does Firefox focus block ads?
6. Does Firefox focus delete cookies?
7. What's the difference between Firefox and Firefox focus?
8. Can Firefox focus be tracked?
9. What does Firefox Focus do?
10. Is Firefox focus open source?

Tags

1. #privacy
2. #committed
3. #firefox
4. #doesn
5. #private
6. #better
7. #personal
8. #while
9. #mozilla
10. #chrome
11. #really
12. #block
13. #internet
14. #experience
15. #sandbox
16. #explorer
17. #still
18. #either
19. #safari