Librewolf is a fork of Firefox, and is absolutely better for privacy and security; way more based than Firefox, you should check it out m8 :)
Using LibreWolf right now! The experience is smooth most of the time, although you do need to switch to Firefox when you need to view DRM-controlled content (like when participating an online course, for example).
Yeah DRM content is why I'm on Firefox instead of Librewolf. I may look into hardening FF in the near future