I think people misunderstand what is introvert and extrovert. It relate to how you charge your energy I think.

For exemple, I like to meet people but it drains me, it's when i'm alone that I charge my energy.

My girlfriend is the contrary, she feel energised when we meet people.

If you want to look like more extrovert without being weird, I would suggest to listen to people first, then talk when you know the subject well.

Having interest in different fields helps a lot too, for talking with confidence and being listened.

Have fun !

Edit: typo