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I think you're mixing up dark matter and dark energy. Dark energy isn't a real thing, it's the placeholder to make certain math come out to work in reality. Dark matter, on the other hand, is, as far as we can tell, a very real thing, but very hard to measure since it only mostly only interacts with other matter via gravity. That gravity is what's affecting the formation, motion, and expansion of the universe.
While stars are blasting out matter, black holes are blasting out jets, and everything is emitting energy, yes it does affect some bodies, but that effect pales in comparison to the sheer mass of the bodies themselves. Look at spacecraft with solar sails. They need to be small and light, with huge sails, and even then they take a long time to get up to speed. Now compare that imparted energy to even a nearby planet: even Mercury isn't significantly affected in its orbit.
Nope. Wrong.
BOTH are not "real" things, as far as you describe. They BOTH describe phenomenon we have no precise explanations for.
Dark matter: Many (NOT all) galaxies rotate or otherwise act like they have a LOT more mass around them than we can observe. Mostly visible by further out objects rotating faster than they should. If there were only as much mass as we can see, outer objects should mostly be waaaay slower.
Dark energy: The furthest distances in the universe are accelerating away from us. That acceleration requires energy from somewhere. It does NOT happen within galaxies, but of course we can see millions of galaxies with the ultra-sensitive telescopes we have today.
In BOTH cases, we do not have a detailed explanation for, but we DO have MANY observations that confirm the effects. They are BOTH real phenomenon, and neither have solid explanations, yet. Hence the "dark xxx" names.
Nope, wrong. Dark matter is LITERALLY modeled as matter we cannot detect.
... how... do you think science works?? We get EVERY sign of matter, call it Dark Matter, yet have no basis for saying yes it's actual mass out there?!
You are a fool if you think science does not say Dark Matter has mass...