French daily behavior

In France, You must to be “grande gueule”, which means “big mouth”, or “the one who shout”
If you are such a person, you will be respected. So they respect persons that when you hear them talking you think they shout
If you talk with a monotonous voice, they will see you as a weak person, and remember when a predator find a weak prey, it's very bad news for it.
Hey English people in France you must to change your customs, Sorry for that news.
There is another tone to use like “Parisians bourgeois” do.
This tone uses 'e' sounds like 'oe' in the end of words, and those parisians are called “titis Parisiens”,
I perceive such a person as someone without any conviction, very spoiled, boring, someone you can't trust.
But surprisingly most of Parisians like thoses persons, oh my god.