Dear @Jammu,
Welcome to the Wefugees Community and thank you for reaching out to us.
Your situation seems to be quite complicated indeed and as you mentioned already, I think it would be the best if you consult a lawyer or a counselling office. Unfortunately, I can not recommend you a lawyer in your area. But I made some research and found two counselling offices in Neuss. You may contact the German Red Cross or/and the Caritas (please follow the links for contact details) and explain your situation. I am sure they can also support you with finding an experienced lawyer. You don't need to worry to get in touch with them as they work confidential and free of charge. They will definetely not report you to the authorities.
I hope this helps and good luck!
Best,
Meike