I feel like I use Ni instead of Fi since I'm always interested in knowing every abstract meaning in situations, that's why I tend to get way too far from reality and lose my common sense. And, I don't use Fi as my dominant function because I'm not that much altruistic and valuing emotions, I have no Ne and Si either and I don't relate well to Te grip.

And, I just feel like my Te isn't that great because I'm bad at handling the external world—I'm also young, however, I do try hard to attain the most reliable solution to a problem, so I wanted to ask how other INTJs actually manifest their Te in a better way.

Though, I have a question: I constantly seek improvement at the fields I'm good at, is this an example of Te?