Confessionalism is like going to a doctor and telling them everything that is wrong with you. But instead of telling the doctor about your body, you are talking to a priest or pastor about your beliefs and your sins. This is a very important part of some religions, like Christianity or Islam.
The idea behind confessionalism is that you have to confess your sins to show that you are sorry for them, and to get forgiveness from a higher power. It is a way to feel better about yourself and to become closer to God or Allah. The person who listens to your confession can give you advice and help you understand what you need to do to be a better person.
In some religions, confessionalism is a private conversation between you and the person you are confessing to, like a priest or pastor. In others, you might confess to a group of people, called a congregation. Each religion has its own way of doing things, but the important thing is that you are confessing your sins and asking for forgiveness.
Confessionalism can be a scary thing to do, but it is also very important. It can help you understand yourself better, and it can help you become a better person. By confessing your sins, you are admitting that you are not perfect, and that you need help to become the best version of yourself.