Yes, Umrah can be performed alone. But, you have to make a passport with your help. You have to arrange a visa for your own. The ticket has to arrange. The transportation system has to manage.  You can choose a hotel and you have to manage the hotel at your own risk. You have to hire a translator if you don’t know the Arabian language. If you need a helper you have to hire a helper. There are many things that you have to manage on your own.