The idiom "make do" means to manage or find a way to make the best of a difficult situation, often with limited resources or means. It can also mean to make a substitute or do something that is adequate but not ideal.

A zero-sum game is a situation where one person's gain is equivalent to another person's loss. In other words, it's a game where the total amount of resources or points is fixed and any increase by one player must be matched by a decrease from another player.

The idiom "zenith of career or life" refers to the highest point of achievement or success in someone's career or life. It means that a person has reached their peak, and everything is going well for them.

"Better late than never" is an idiom that means it's better to do something late or after the expected time rather than not doing it at all. It suggests that even if someone has missed an opportunity, it's still better to act on it than to regret not having done so.

"The benefit of the doubt" is an idiom that means to give someone the advantage or assume that they are innocent until proven guilty. It refers to a decision that favors or gives leniency to a person, even if there are doubts or uncertainties about their actions or motivations.