Greek mythology is the spiritual product of primitive clan society. It is the earliest literary form in Europe. It came into being before the 8th century BC, and formed a basic scale on the basis of long-term oral communication by primitive Greeks. Later, it was recorded in Homer's epic, hesiod's Divine Spectrum, and ancient Greek poetry, drama, history and philosophy, and later generations compiled it into the current ancient Greek fairy tales, including stories of gods and legends of heroes.
If you believe in gods, then these gods must be real. However, in fact, all stories are just adaptations of reality. And since it is a story, it must be literary. Besides, Greek fairy tales are more understood as literature and fables. So we don't need to examine its authenticity too much. Everyone has their own opinions, don't they ~