Is someone impoverished when they earn money? For example, if I earn 1 million in a year doing business, this money should come from somewhere. It must come from the people.?

Not really. After a financial crisis wealth can really disappear so the wealth is not going to anybody and the economy doesn't remain in a static system. The economy is dynamic and people can borrow on credit based on money that doesn't exist yet but will in the future.

It's not like a pie where all the slices make a whole and nothing more can be added to make the pie bigger. If that was the case then the same amount of money would have always existed in the world or there would have been a lot more wealth at the beginning and it would have been progressively disappearing since then.