Haha that's interesting. I've taken one of those tests twice, one in school because we had to (8th grade) and that was INFP and one just so I could compare with my friend and see how much I've changed (10th grade) and I got INTP.
I think I'm pretty much always going to be introverted though I feel extroverted around my family and friends (which makes sense because I'm comfortable around them). I still wouldn't say I'm both though because that's pretty natural to be more yourself around those you're comfy with.
I'm definitely more open online 😆 It's just easier that way but I'm still cautious.
I also don't like the generalization that extroverts are always talking and introverts are always shy. I remember someone tried to convince me and
@Horizonshard that Nayeon, Jihyo and Dahyun were actually extroverts becauss they talk so much and don't see shy at all. But we don't know them personally and even though Jihyo was confirmed to be an extrovert last year, it doesn't make it so where you talk a lot and you're an extrovert.
Dahyun seems pretty introverted to me anyways. She's only a 4D personality when she wants to be she's actually pretty quiet, especially in Twice music video reaction videos and Twice group interviews.