Corporations and limited liability companies must appear through an attorney. It would probably be reasonable to permit single-member limited liability companies to have the sole principal represent the entity. But you take the law as you find it.
Now, it may be that you can find a lawyer who will work on a contingency basis. I don't know anything about the facts of your case; only that the U.S. District Court dismissed it. I do not know when it was dismissed, or on what basis, so I cannot say whether you have grounds to bring a new lawsuit. So it is impossible to evaluate whether you are likely to be able to hire a lawyer by means of a contingency arrangement.
Good luck to you.
Michael S. Haber is a New York attorney. As such, his responses to posted inquiries, such as the one above, are limited to his understanding of law in the jurisdiction in which he practices and not to any other jurisdiction. In addition, no response to any posted inquiry should be deemed to constitute legal advice, nor to constitute the existence of an attorney/client or other contractual or fiduciary relationship, inasmuch as legal advice can only be provided in circumstances in which the attorney is able to ask questions of the person seeking legal advice and to thus gather appropriate information.