This isn’t a very productive argument.

Google is evil, Google writes code to create Chromium. Google builds Chrome on Chromium - therefore Chrome is evil.

Firefox is Good.

Which one is better?

That all depends on whether you want the entire internet to be owned by Google…

I find Firefox is good to use, and if it fails (for example, to give me microphone access in Translate) then I do the job in a Chrome webapp.

Firefox should be default, and keep Chrome in reserve for some things that won’t run in Firefox - simple.