I don't think this question is unclear at all:
I know about personalities of some people, but I cannot prove it through valid reasons. How do you know if a person really does understand you more than yourself as an individual?
Well, I think I understand your perspective. If OP know a model of personality and ask questions based on that, then their understanding will improve significantly, and not only they can find the correct term to describe what they feel, but also be able to ask clear questions here.
But in OP's perspective, it may not be unclear why their question is unclear:
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking.
I think in their perspective they are doing exactly what it suggests, to their best. Of course their best is not enough, but telling them to do the thing they have already done will only confuse them. I suggest for this type of question we should encourage OP to read textbooks, or else they will never find the necessary vocabulary to describe their problem.
For those who have known me enough, I think this is the one big problem of this site, beside lacking of user base. But it is easy to fix if we can have perspective-taking and aware of our illusion of transparency. We may also want to use the I-message to talk with them.