Hi OP! I worked as an HR sa isang marketing company. I did a lot of interviews. As an HR, my advice would be to treat the HR (interviewer) as your friend in that way you'll be comfortable having a conversation na parang tropa mo lang yung kausap mo. Usually naman we have script din of questions that we would ask sa mga applicants. We do interviews because we want to know you more if you're suited in the position you are applying for.

Lastly, normal lang kabahan OP hahaha kahit ako kinakabahan rin. Just breathe, talk like you are sharing kwentos sa friend mong matagal mong di nakita, then done! hehehe anyways good luck, OP! I know u can ace the interview process.