The name "Lucifer" comes from a greek translation of "The Light Bearer" in older scripts. This was in reference to The Morning Star - an extremely important symbol among ancient scholars.
The Morning Star is the planet we now call Venus, and it traces a pattern in the sky resembling a flower with five petals, all equally spaced and sized.
This is the origin of the pentagram as it is used to symbolize stars and the study of them.
The scholars - the keepers and 'guardians' of knowledge - found their own role in humanity to be very simillarly symbolic with this brightest star in the sky and used it as a symbol for the pursuit of knowledge, taking on the moniker of being light-bearers, themselves.
The association between the name Lucifer and Satan within the west is largely from the condemnation of Nebuchadnezzar found in the Bible, where he is described as a sort of fallen saint or likened to a false light.
Though there is a confounding even deeper than that when you look at the roles of beings like Prometheus and the tales similar to Eden.
Western cultural understanding is that the serpent of Eden was an angel cast out of heaven for rebelling against God. This serpent then deceived Eve and had her take the fruit of knowledge in an attempt to poison humanity or carry on the war against God. Thus - the fallen angel is evil and our knowledge was gained through deceit and a malicious intent.
This is the modern narrative that has evolved out of a more nuanced system of pantheons of old. Prometheus was a trickster and certainly fucked with the gods (just as Veles did), but wasn't evil in the sense of raping or harming people. There was usually some 'lesson' to just about anything they had someone do that was meant to expose their flaws for analysis… Or destroy them for being stupid….
There is true evil - but more in the sense of the "fallen sage" aspect of Taoism or Buddhism. The idea that one is empowered and justified in the attempts to control the world or manipulate others is a sort of "objective" measure of evil as no person can know enough about the world and others to 'do what is best' for anyone - even their own self, in many cases.