Except we don't need dark matter. Quit ignoring what you already know is there - plasma. Stop treating 99% of the universe like you do that other 1%.
NASA's Chandra Shows Milky Way is Surrounded by Halo of Hot Gas | NASA
I mean come on, you aren't even willing to call it by the correct terminology. "Gas" hotter than the surface of the sun - and we know what that's made of, and it isn't "gas". And because you treat 99% like the other 1%, you require 95% Fairie Dust.
Sun - Wikipedia, the free encyclopedia
"The Sun is a nearly perfect spherical ball of hot plasma,"
Plasma (physics) - Wikipedia, the free encyclopedia
"The presence of a non-negligible number of charge carriers makes plasma electrically conductive so that it responds strongly to electromagnetic fields....
...Unlike gas, under the influence of a magnetic field, it may form structures such as filaments, beams and double layers....
...When the charges move, they generate electrical currents with magnetic fields, and as a result, they are affected by each others fields."
And hence because you ignore the behavior of plasma, all your models end up being incorrect when in-situ measurements can be taken.