I always make people feel awkward, why?

Guys I don’t know what to do! I am super awkward I guess, but I mean not even. Maybe it is because greek is my first language and english is not! I only make people feel awkward in USA!

When a certain service comes to my house like plumber etc. I just am so awkward I don’t know what to do. I really don’t want to continue like this! I hate making people feel awkward! Are there any ways I can get past this? I think about it 24/7 after it happens too which sucks :(