What is happiness?

Hello Rabbi.
The West is the most comfortable place in the world to live, with good material conditions, abundance, freedom, ethics, and so on. Despite this, Westerners are the most depressed people in the world, confused, meaningless, and lonely. On the other hand, people who live in poor conditions, and not just people who live in fundamentalist sects, are much happier. In fact, there is a clear measure between fundamentalism and happiness.
The question is what is happiness if fundamentalists and those living in various sects (like North Korea) are happier? Isn’t that the preferred way of life over a fat, suffering free life? I personally choose freedom because it is something very internal to me, but am I right?