Once time with immigration

I talked with immigrate person when I arrived in United state. I felt excised and nervous for everything because I couldn’t speak English very well and I didn’t understand when they said. I remembered that one lady she asked me why are you here? Where are you live? Who do know in United State? and a bit questions. I talked with her around 10 minutes and after that I passed to America the big country that many would like to be here. Now I lived here around 2 years and I learned a lot English accents but it is not enough for me. I want to study more and want to speak like native speaker. I know it is so hard but I will try to do it.