Many people are intimidated by the formal nature of an interview, and all of their social tools suddenly become irrelevant. A big part of this is due to a lack of familiarity with how to conduct yourself in an interview and in a professional setting. Most people acquire this knowledge over their professional life, but for new entrants to the employment market, it can be tricky.
For those new entrants, an important part of having a productive interview is learning how to conduct yourself in an interview. This covers a wide range of aspects, such as personal appearance, the language used, and how proficiently you demonstrate your grasp of relevant facts.
For your personal appearance, most interviewers will hold some basic expectations of how you should present yourself. It is a formal occasion, so you should dress formally. This means wearing smart office clothing and underspoken jewellery or covering tattoos.
The language that you use is also important. You should try to be polite, well spoken and confident.
Demonstrating your understanding of the relevant facts is usually the most important factor. So many of the jobs available in the economy are skills-based professions, so it is essential that you start off your introduction by displaying your competencies.