You may file a bankruptcy petition on your own if you are an individual, but not if you are a corporation or partnership. However, the relief available to you, the obligations imposed on you and the ramifications associated with the bankruptcy are extremely complex. It is difficult to have a successful bankruptcy case without the help of competent legal counsel.
If you decide to file without an attorney, see the "Filing Without an Attorney " section on the U.S. Courts website.
Please note that Court employees cannot provide legal advice.