Can a man who doesn't know how to deal with people, communicate with people, feel inferior, and be afraid of society marry?

It depends on your own choice. When you are sure that you can be as strong as Superman, you can shoulder all the grievances by yourself. You don't have to accept help from others to get married. On the contrary, when things happen, you need a shoulder to lean on, someone to support your family, and someone to help you out when you are wronged.