I think I'm definitely a mixture of both (ambivert.) An ambivert sits in the middle of the introversion–extraversion spectrum and can draw on either set of traits depending on the situation, mood, people, or energy level. They might be outgoing at a party with close friends and quiet and reserved the next day, or social at work and prefer solitude at home.

When I was younger I definitely leaned more into introversion but seemed to embrace the extrovert side as I've aged.