How to judge the level of a person's laughter?

In fact, everyone has something to laugh at, but depending on the specific reality, what comes out is different for everyone. Extroverts are good at expressing themselves and can easily make introverts laugh. Although introverts may feel dull, their inner world is rich and colorful, and they are sensitive to the level of laughter. What I want to say is that the level of laughter is a human feeling, and different people feel different. Needless to say about emotions, when a person is depressed or even jealous and sad, he will not have any laughter, and the same laughter will lose its meaning to him.