Welcome to the Wefugees Community and thank you for reaching out to us.
I am sorry to hear about your family's complicated situation - I believe it is very important now for you to have individual and good support by a lawyer and/or in a migration counselling centre. I am afraid that in your case it is hardly possible to give general advice here on this public platform.
But don't worry - there are many counselling offices all over Germany which offer free of charge as well as confidential counselling services. You may use this search engine to find an office in your area. Otherwise please also don't hesitate to get back to us if you need help in finding addresses - we are happy to help (just share your approximate location). The social workers in the refugee/migration counselling offices may also help in finding an experienced lawyer.
All the best,