Hello:) I develop my game alone, and I do not have my own company, or rather I am in this company alone. When trying to put my game I am asked “company website”. So the question is, do I need to have a website if I do not have a company?
Publishing game is a complex process. You need solid base. So it is not impossible, but you will have more work to convince people that you are reliable businessman. Making even own blog help you also geting people to your project.
Yes, you should create your own website and display your portfolio.