I genuinely think that the idea of being an introvert and extrovert is a load of nonsense. I think it just boils down to whether or not you are proactive when your around people. The most confident people actively choose to be high energy and interested in later people when around others and the same person could just as easily choose to sink into the background. People hide behind the thought that it’s out of their control if you can’t socialise, but they are either too nervous and make themselves scared or they’re too lazy. Nothing else. If you just decide that the nervousness is actually just excitement, then being scared turns to anticipation. Just stop making excuses and take the responsibility.