AirPods playing out loud

When I play music in my airpods it plays out loud and not really in my ear I can hear it but barely. In class one time I was listening to music and couldn’t really hear it and it was turned up all the way. My classmate in front of me told me to turn it down because it was really loud and I was so confused. This is very frustrating because I got these a month ago and haven’t even used them very much. Please help!😫