People say I'm stupid

depends why they call you stupid

I guess both, not really naive trough, I know some girls called me stupid cause they said I can't tell when girls like me (I know most from my class had somewhat of a crush on me, just ignored it), because of this and other factors I appear naive.
And stupid cause I say stupid shit, whatever crosses my mind, I like saying dumb shit to see people's reaction, or hold devil's advocate in a argument for no reason.
But I think I'm also actually stupid, but I wouldn't know what/how stupid I am because of my stupidity.

>I like saying dumb shit to see people's reaction, or hold devil's advocate in a argument for no reason.
this sounds obnoxious as fuck

Damn, I might be, how do I fix that too?

You seem to be ignorant or abscent. But to be sure, how were you in school and how "fast" and accurate are you thinking wise?

Are you capable of reading a book?

Well I got good grades in whatever I cared about, but my strat was get really good grades first semester, and second semester just do whatever whenever as my grade wouldn't be affected anyways.
But English, history, geography etc, I was a 8-10/10 in those without really trying, france was my weaknesses but I almost never showed up to class. (Already speak 3 languages, might learn Spanish/Russian too but that's for later)
All in all, I'm at least average I'd say, maybe somewhat above but I have not enough of a pool to say.

Obviously, past two weeks read dumb redpill bs like The rational male/ The book of pook / Redpill handbook, but I can read a book, any recommendations to fix stupidity?

how to win friends and influence people

if you literally just say dumb shit to see people's reaction people will think you're dumb.. this is a no-brainer. if you needlessly play devil's advocate a lot, it's tiresome. most people don't want to have intense debate-style conversations on a regular basis.

you seem to need to get better at gauging what is appropriate to talk about in different situations, and different levels of familiarity with people.

"how to win friends and influence people" is my book recommendation btw, not a description of my post. lmao

I've read it when I was 15, listened to the audiobook a few months ago, trough I don't remember 300 pages in every interaction

So added to lowky ignorance I guess you're a classic case of intelligent but not smart. You may be good at learning and getting infos but only average at processing moment stuff so you are innerly confused why your ability to interact with the outside world doesn't add up to your knowledge. Are you feeling like that?

Damn you just described what I felt perfectly, I guess "processing and problem solving" is IQ related and can't be changed, or can I improve into that aspect?

You can increase being kinda "agile a bit, depending on why you think like you think (easily distracted, abscent minded etc.), but the way you act in a Moment is something you ultimately can hardly change from what I know. Social interactions are not deeply tied into that tho.