I think you are asking about your rights under German law as a person born in Germany to Pakistani parents. But you are asking it in a forum where U.S. lawyers discuss circumstances with advice seekers having to do with their rights under the law of various states within the United States. You list your location as Otsego, Michigan, but your question appears to indicate that you are in Germany and are asking about your rights in Germany.
I am skeptical that any lawyers licensed in the U.S. will be able to assist you. You may want to consult a lawyer in Germany who can advise you respecting the law of Germany and how it applies to you.
Sign up to receive a 3-part series of useful information and advice about child custody law.