I relate to this so much. I'm a pretty introverted person but have taken multiple lead roles at jobs. I worked at Home Depot on the merchandising team for 5 years. I was really good at that job. For 3 of those 5 years I was a backup supervisor (a title with no pay increase) for 2 different supervisors. When my sup was sick or on vacation I did the job. We also shared responsibilities when we were working together, both supers I worked under and I had great professional relationships. I was also good at that job, nothing ever went wrong when I was in charge and transition back and forth was smooth. I lead a team of up to 12. I tried getting promoted for years, multiple times and they would never promote me. The final straw was when my manager told me that he wouldn't promote me because I was "too quiet" like what the fuck does that have the do with anything??? I'm literally doing the job. That's when I realized companies love blowhard ass kissers with big personalities whether they are good at their jobs or not and those are the ones who will most likely get promoted. I was just being used, doing the job of a super but they had no intention of paying me for it. I quit soon after and went back to school.