Annulment, how? im german

I don’t think it matters about getting married here. I got married in Germany, and still had to get an American divorce.

we got married march 05 in raleigh and i left 3 days later to come back here to germany. i havent seen him since then and since i dont even know where hes at the last couple of month i wanna file for annulment. How do i do that? and can i do this from germany??
marriage never got aproved in germany.