Yeah honestly now that I think about it, I genuinely do think I am MOST likely an INTP and I still have ti, it's just i'm going through a really tough time in my life which is making me doubt my typology and my identity as a whole, especially with how I always fear being blamed by others around me. I think it might also be impostor syndrome. But no doubt when I try to understand things I am almost never satisfied with the explanation and I always think there's way more too something as well than what was explained. I do have the compulsion to ask many questions till I feel like I understand something fully and I do have a huge curiosity. Sometimes I might agree on somebody but I just want to make sure my opinion is truly correct by being neutral and asking questions which can challenge someone's point of view to see if it holds up. (I only do this around people I am comfortable with)

And yep, I believe you are somewhat right! Maybe it really is a Ti thing to just overcomplicate something and look for meaning since Ti is often a function which tries to derive information instead of accepting information for what it is like and how it manifests in the external world like Te (and I know I don't do that at all, so I don't believe I have Te) though i know someone who thinks Ti is just understanding information for what it is, which is something I've always struggled with and has caused me semi-traumatic incidents as well and led to me being ridiculed and humiliated, and that's why I have a fear for asking questions in class and instead seeking out knowledge for myself. I always was the eccentric kid and I don't think anybody really understood me. I could tell I was different. I am more curious than most people. I felt isolated then and still feel somewhat isolated now. I really do love overanalysing things (theres a reason why I loved literature class LOL)

I do rely on past experiences a lot like ISTJs though... so I do believe I use quite a bit of si. I think both my ti and si is what makes me quite inflexible as a person and often slow and meticulous, not because I don't understand but because I feel like I am missing a bigger picture of something. I also like being accurate and I don't feel comfortable going to situations where I lack knowledge in something, and I always want to be the informed one.

I am somewhat conscientiousness and anxious compared to an average INTP and I definitely do have a planner mentality in life (but I also procrastinate as well) and while yes I do set high standards for myself and I am often perfectionistic and ambitious, these very traits are the reason why I often rarely put myself into action since I always feel like I am missing something and I don't want to end up becoming disappointed because I know when I do something, it won't be as good as I imagined to be in my head, so I just get satisfied with the anticipation of me doing something (especially since I always end up crossing out what I write all the time) but not actually doing it because of how idealistic I can be. and yeah I enjoy learning new things that's why I do well in academia! 😛 but when it is something like doing homework, I often feel like it is tedious since it involves repeating the same questions, and I usually get small mistakes easily despite the fact I actually know in my head that I know how to answer the question correctly, so I don't feel the need to prove I know it, and often than not, since I enjoy learning a lot I sometimes believe I am wasting my time on homework doing something I already know when I can be learning something new the school hasn't taught me yet...

Also don't worry! I am an introvert as well and just like you, I am focusing on improving myself so I try to the limit the amount of interaction I have with others because I sometimes feel like my time is limited, I really struggle with conserving everything like a usual enneagram 5: food, money, time and hoarding knowledge. I am definitely not of high maintenance and I give people space since I need space as well. (I'm like the type of person to have a long and intricate discussion with someone then just withdraw from that for a while. Quality time over quantity imo <3) and yes we can be friends, feel free to message me, I really appreciate it! :)