Should I rent a room alone when I come to Japan?

Everyone knows that the salary when going to Japan to work abroad is basically higher than in Vietnam, especially for unskilled workers, in rural areas, this is considered the ideal salary. Many people think that the salary is so high, why not rent a house outside to stay alone for comfort, not affected by other people, and not spend a lot of money? 

But if you are thinking like that, then perhaps you are wrong, although being alone has a real private space, it will be extremely expensive because the cost in Japan will be proportional to the amount of money. the salary you earn, it is much higher than in Vietnam, that is, the more money you earn, the more you have to pay. So if you live alone, you will have to pay a lot of money such as electricity, water, internet, house ... alone this number will decrease if you live with other people.