Never means not at any time. We use it to say something did not happen and will not happen. It is the opposite of always.
I never eat meat.
She never goes to school.
Never can show strong feelings. It tells us that something is impossible or will not happen. It is often used with strong emotions or commands.
I will never do that!
You will never win the game.
Never is used in questions or formal speech to talk about things that have not happened. It makes the question polite or the refusal softer.
Have you never been there before?
He never liked that idea.
Never can be used in a figurative way to stress something is very unlikely or will have a strong effect. It is common in idiomatic speech.
She will never forget this day.
You will never find a better place.
Never can be used in conditional sentences to show that some result will not happen without certain actions. It emphasizes impossibility.
If you never try, you will never know.
Without help, we will never succeed.