You are the first foreign people that I talk to. I may feel afraid to encounter .... because I myself never to meet with anyone at all. If there is an error, I have to apologize in advance.
You are the first person I talk to foreigners. I may be scared to meet me because I'm never going to meet anyone face to face with anyone if there are errors, I apologize in advance.
You are a foreigner who I talk to. I may feel afraid to meet each other because I never meet one-on-one with anyone ถ้าหา eccentric error I must apologize in advance.