Structural Integrity Associates Oil & Gas Assessments Engineer interview questions

First interview was a call which went well, second was an optional in person interview with a presentation. I made a powerpoint which was absolutely terrible . I had no idea what they were looking for but I know I did a terrible job before I even got to their office. I was told there was a maximum of 5 people in the interview, 5 people were at the office and the person I had a call with was also watching via zoom, no big deal so far, then the person I had the call with asks everyone to introduce each other, apparently there were over 15 others on the call. I wasn't prepared for this, at the end of the interview I didn't want the job or want to work at the company and I'm happy they passed me up. TLDR I'm bad at interviewing, they made it worse.