Luciferianism is more a philosophy to me than a religion. I'm still formulating my thoughts on who or what Lucifer is, but I do think he's a fallen angel who rebelled against YWHW and was kicked out of Heaven for that reason, before becoming ruler of his own dimension called Hell.
I don't think he's a symbol of evil. He's a rebel who broke the rules and accepted his punishment. He's a lightbringer, a liberator, someone who demanded better, someone who says it's okay to mess up but you have to make amends through your own means, someone who encourages us to question social norms and authority, someone who gives hope to the disenfranchised, someone who believes it's okay to love yourself and live life to the fullest and be flawed and be beautiful.
People and deities who embody those values are what I believe to be Luciferian figures, and I strive to be like them. That's the philosophy I follow.
Now, if you've seen my profile, you'll notice that my religion is Luciferian Christopaganism.
After leaving Christianity at sixteen I found paganism and eventually began...maybe not worshipping, I dislike that word, but venerating other gods. For me that mainly means Persephone and Aphrodite, both of whom I believe to be light-bearers and Lucifer figures.
I also venerate several Abrahamic figures, including Mary Magdalene, Jesus, and Esther, and believe that they are Lucifer figures as well - though, unlike traditional Christians, I don't believe Jesus was the Son of God but was instead a prophet. I believe that YHWH, the Holy Spirit, is a conscious force connecting everything and everyone. So if anyone was wondering how my religion works, there's your answer.