Dark matter is one of the greatest motivation for the existence of a theory beyond the Standard Model of particle physics, and it is therefore searched for… well… mostly everywhere

Sorry for being frank, but the whole concept of dark matter/energy is a complete dead end in my humble opinion. Have you researched about the Plasma/Electric Universe? Their idea is that all of these concepts were created ad hoc to explain what gravity alone can't explain as it is essentially the only force that cosmologists use. It's definitely worth to step back for a bit and rethink the mainstream paradigm as this is so much more elegant (also occams razor!).