Plato's parable of the cave was written to illustrate how unnatural it is for humans to seek the truth: education is a painful process, some people willingly remain in the comfort of the darkness their minds provide, and they will kill you if you try to force them out of it.
This allegory is also reminiscent of how great freedom often comes with great solitude.
It's in human nature to like the idea of freedom, without actually going all the way to acquire it. We are afraid of alienating ourselves from our colleagues, friends, lovers, and family, so we never act to make our dreams a reality: we are afraid of the solitude freedom brings.
Once you leave the cave and see all your fellow humans slaving away, it's only natural to want to help them follow the same path you walked, or at least to understand it. But you will fail and will be shamed for it, because you can't help people that don't help themselves. That's when the feeling of solitude is at its peak.
Worse, the entitlement you feel is toxic to everyone, including you. The resentment it creates will only lead to the opposite effect by leading people to be proud of their ignorance. It's a vicious circle that isn't easy to break from, and it's this way for everyone.
The only solution is to regularly come back to the cave and talk with those who want to, without any expectation or judgement or any sign of white knight syndrome. After all, you never know if you didn't leave one cave for another.