I'm really confused to choose from my dad & my mom families?

im livin in ethiopia when my mom dies i was 12 she didnt tell me any thing about my dad , now im 21 , but im still looking for my dad since when i was 14 . there was a problem with my dad & my mom families thats why he can't meet me .my mom families grow me like their son even better , i love them very much at the same time i'm missing my dad so is ther any body who can help me to find my dad he is from ethiopia & livin in australia.