I'm frenchFrench study beginner, so iI don't have so much knowledge about French but I'm trying to read a book, at this book iin which I found athe sentence "c'est pas d'sa faute“c'est pas d'sa faute”."
What is "d'sa"does “d'sa” mean in this sentence?
and why it is it not "ce n'est pas d'sa faute"“ce n'est pas d'sa faute”?