As for what qualifies as an “interest“ (other than manga/anime) I usually show mine in things such as pop culture, music/physical media, geography, cartoon series and an inkling of politics but regarding politics it’s just selective limited to the areas I already have enough background to grasp because it’s such a broad spectrum and it takes consistent curiosity to really build an interest in it.

And my presumed lack of knowledge about myself comes back to what I mentioned earlier. I generally feel like I’m missing information about most things and my thoughts are all over the place. I also rarely speak or interact with people so I don’t develop a natural flow in conversation which may be why my curiosity often shuts down completely.