Is it normal to laugh at everything?
Mostly.Normal for most people
Yes, laughing a lot is normal for many people. Sometimes it’s your sense of humor; sometimes it’s a way to handle nerves or awkwardness.
Some people just have a high laugh setting, and plenty of others laugh when they’re nervous, uncomfortable, or not sure what to say. That doesn’t mean you’re laughing at the wrong things on purpose—or that anything is wrong with you.
It’s worth paying attention if the laughter feels impossible to control, is causing problems, or started suddenly along with other changes. Otherwise, you’re probably just someone whose laugh shows up often.