I became "tired" after typing only a few quotes. Then, I carefully examined: exactly which part of me is "tired"? And I found that it is not the eyes (the receiving device), nor the fingers (the transmitting device) but the brain (the processing device). It's all in the head. Not enough blood is pumping into the head. They say that in order to achieve anything, you must first "imagine (visualize)" it in your head vividly how the "achieved state" is like. Well, that principle is not only applicable to "hopes and dreams" on the scale of a lifetime, but also on a word-by-word basis. At the "tired" state, my head is no longer clearly imagining how a word is typed, but it has delegated the task entirely to the eyes and fingers, which seek to resort to "luck" and attempt to accomplish the task (the typing of a word) through tries and errors. So once again, in short, "it's all in the head".

Accuracy comes before speed. Play on instant death.

yeah i got off on tangents like that too. happens to all of us. but if you seriously want to improve try to get in touch twit the typing community discord. there are multiple pdfs available there which are written by some of the best typists in the world. i'd suggest the 10ff discord server

OK, I don't know, I'm making up a story. Maybe I should not have said that. I hope it would not be true just because I said so... I watched an episode of a horror TV show last night. Usually, I'm not afraid of horror TVs and movies. But that one was kinda a little really scary.

Thank you for your advice, #venerated. I started SEVEN(7) years ago, 50WPM at that time. I completed more than seven thousand (7,000) tests at keyboard-racing dot com and more than eight thousand (8,000) tests here. As of now, I can hardly get to 90WPM, which is pretty... sad. Only recently, did I have a good guess why. It is because in my head there are too many chatters, noises, little voices, haha. I have "unfinished business" elsewhere, out there somewhere... in other worlds... where there are ghosts that are constantly calling to me "where have you gone... come here... come back... take me..." Yes, I think so... something like that... that is the reason.

its genuinely puzzling how you haven't improved after thousands of tests on here. where did you start? what wpm?
i think the thing that would help you the most right now is to actually focus entirely on raw speed improvements and completely forsake accuracy. might want to start from somewhere like 10ff or monkeytype and just try to get your burst speeds as high as you can (do that by just typing as fast as you can. there's this nice feature on monkeytype where you can actually select how many words you want to type. do a lot of 10 word tests and such)
i think that should help.