Private sector refers to business owned and manege by individuals which are not government funded, private sector include business, companies, commercial banks etc which are owned and manege by private individuals who has nothing to do with government for the purpose of profit making
Most people prefer to work in the private sector because we can arrange our own time and procedures to develop each business we are involved in. In the end, all of us talk about the benefits of working in the private sector or in government, the difference is that when we build our own business the results will be ours. The government cannot possibly reach all levels of society so that the presence of jobs in the private sector can help the process of human life.
Working in the private sector also has advantages where we are given targets according to the work we are involved in and the bigger the target we achieve, the bigger the profits we will get. That's why some people prefer to work in the private sector which has work targets because they can make more money.