It is too late. Firefox is just a reskinned chrome. The only reason i still have firefox on my computers is because there are websites who only work in chrome or firefox.
Isn't that way too extreme? Firefox and Chrome don't share a lot of similarities, except arguably both implementing manifest v3 after Google's push, but even those are fairly different.
Firefox is one of the few browsers left that isn't a reskinned Chrome: its a completely independent implementation. Perhaps you're thinking of Edge, Brave, or Vivaldi?