Consider the following sentence:
It is all about being lucky.
meaning that being lucky is the main point, reason or factor.
How would you put it in a negative form?
- It is NOT all about being lucky.
- It is all NOT about being lucky.
- Both can be correct, depending on the context or meaning.
I mean to say that there are other factors to be considered apart from being lucky, or that being lucky is not the main point.