To apologize is not just “Xin lỗi”. Instead, try to add an excuse, and what would do to compensate to your friend. Look at this video to learn more about how to “nói xin lỗi” in the most native way
SVFF is a group of Vietnamese Language Teachers, all of which have at least 2 years of teaching, a BA in Language Teaching. We are motivated and ambitious. We are passionate about helping Vietnamese learners to be able to communicate well in Vietnamese and understand people culture.