Gotta, wanna and gonna are all the rage nowadays! Much like would of and could of.
“Gotta” is slang (and reprehensible. I apologize!).
Chutzpah is a Yiddish word meaning
“the confidence or courage that allows someone to do or say things that may seem shocking to others. In other words, it's having the “gall” or “nerve”. It is derived from the Hebrew word “ḥuṣpāh,”meaning audacity, cheek, nerve.
“Would of” and “could of” are merely illiterate misunderstandings of “would have” and “could have.”