I'm an ambivert

I was thinking about my personality. I knew there were two kind of personalities (extrovert and introvert). I noticed that I was both of them somehow, sometimes lively and sociable and on the at other times completely different. I researched what do they call this in English, and eventually found out that I am an ambivert person: someone who is both extrovert and introvert both.

[better: 'I researched what this is called in English']