Pls Help! I was abandoned by my father...

Long story short, I am currently 19 years old, my biological father abandoned me and my mother at my age of 3, then I never saw him until then. He lied to my mother that he is a non-marriageist, he never provide anything, literally anything to me and my mother, not even a penny of dollars. He is an American citizen, for the past 6 years, I asked him for more than 10 times if he could give me green card or citizenship but he never agrees, I just want my mother to feel less stressful by paying less tuitions and provide her a satisfying life. Is there anything I can do? I have been looking up on countless websites, the information I got is, in order to obtain citizenship/green card through parent, the father need to declare the son otherwise there is nothing we can do.

I have been also looking up on the SIJS (Special Immigrant Juvenile Status), is my situation applicable? If not, is there anything we can do for our right?

Thank you all for helping, I am so overwhelming.
 
Did he ever agree in writing to support you until you turned 18?

Did he acknowledge your paternity while you were under 18? or did a court ever determine your paternity while you were under 18?
 
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