Mythopoeic Thought: The root of Greek philosophy. Well written, highly informative OP. A thank you from all of us to javi2541997.
Mythology is, inter alia, what in modern terms would be novelization of one/more ideas - the point is to convey the meaning of them through a story involving, if the writer is worth his salt, interesting & relatable characters, good, bad and all in between. Story-telling around the fire, ring any bells? Everybody loves a story, oui monsieur?
The other facet to myths is the personification of qualities e.g. war has a god Ares, death is Thanos, life is Phanes and so on. I'm particularly partial to this approach - it resonates deeply with me. This way of looking at our world is not unique to the Greeks though; even Hindus do it e.g. there's a god of death, Yama, in that religion. Once we replace a something with someone, which myth is, doors open - we can talk, beseech, curse, negotiate, placate, persuade, instigate, the list goes on, with these gods/deities.
Myths make the abstract concrete - ideas become beings we can, sensu amplissimo, commune with.