I am watching this video https://www.youtube.com/watch?v=1vzgnTEMyCg which I find a real treasure trove of REAL down to earth ordinary folk's language.
Does "he is not for giving in" mean something like this: "he has no intention to give in"?
He is not in favour of giving in. If you are "for" something, you are in favour of it or you support it.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.