Hi break and welcome.
I had asked a similar question and was referred to Steven Weinberg's "The First 3 Minutes". It is a little dated but gives a good picture of things. Try this link
http://www.iot.org.br/...-the-first-three-minutes-ingles.pdf
I am not sure that it will answer your questions but it may shed some light. It does say some things that seem contradictory to the current explanations of the expansion of the universe like;
"The galaxies are not rushing apart because of some
mysterious force that is pushing them apart, just as the rising
stone in our analogy is not being repelled by the earth.
Rather, the galaxies are moving apart because they were
thrown apart by some sort of explosion in the past."
I am assuming that it appears to be a contradiction because of something that I am not understanding or it is outdated.
I will say, in sympathy, that it is a complicated subject and requires alot of study.
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