There is much offer in the browser world, i don't understand what's the point of keep using google shit suite
AFAIK, you cannot, on iPhone you're forced to use Safari (all other browsers forced by Apple to be reskins of Safari).
On iPhone it's all WebKit. Apple doesn't (yet!) allow Firefox to use Gecko.
Pale Moon uses a fork of Gecko called Goanna.
SerenityOS has an independent browser in the works, and netsurf is still around.
There are options, but people have put most of their eggs into two baskets and now we're stuck with things looking mostly the same but some have antifeatures.
I want a browser with uBO's functionality simply built in. Fuck your extensions or other attempts to endrun, Google. Stop it at the source and build request filtering into browsers directly.