Google is now rolling out a system where Chrome directly tracks your activity and shares its summary with advertisers.
Also Firefox is faster as of like two months ago.
It takes five minutes to switch browsers, and the difference is so little that you’ll often forget you did it.
I don’t use Firefox because it’s slow on Android. I use Vivaldi. Not fully Open Source but still good with privacy and actually kind of easy to check thay’re not fooling the users. Plus, it has a bunch of features I really like, such as nested tabs, workspaces, and full sync of almost everything