allegory the cave , from the great dialogues of plato

“I will send u the picture “What does each allegorical figure (the Cave, the Sun, and so on) represent?Why is it so difficult to leave the cave of darkness and enter the light? Why is the light so painful to endure? Why is it easier to live in darkness?How does this education of the psyche contribute (according to Socrates) to the life of a “well-governed society”?