You mean, Isaiah 14:12 in *your* bible says that. Other bible translations are as such:
New International Version
How you have fallen from heaven,
morning star, son of the dawn! You have been cast down to the earth, you who once laid low the nations!
New Living Translation
How you are fallen from heave,
O shining star, son of the morning! ...
English Standard Version
How you are fallen from Heaven,
O Day Star...
How you have fallen from heaven, O day star, son of the dawn! You have been cut down to the ground, O destroyer of nations.
biblehub.com
Since Isaiah was originally written in Hebrew, the Hebrews have translated the verse as such:
12How have you fallen from heaven,
the morning star? You have been cut down to earth, You who cast lots on nations.
Even the Commentaries from the Bible Hub page are in pretty close agreement that Isaiah 14:12 is NOT making a reference to "lucifer" or "satan."
Etymology online describes the origin of 'lucifer' as such:
"Belief that it was the proper name of Satan began with its use in Bible to translate Greek Phosphoros, which translates Hebrew Helel ben Shahar in Isaiah xiv.12 — "How art thou fallen from heaven, O Lucifer, son of the morning!" [KJV] Because of the mention of a fall from Heaven, the verse was interpreted spiritually by Christians as a reference to Satan, even though
it is literally a reference to the King of Babylon (see Isaiah xiv.4). Sometimes rendered daystar in later translations."
Search results for 'lucifer' on etymonline
www.etymonline.com
And finally, from Wikipedia, which gives a more thorough description:
en.wikipedia.org
Oh, and just so you know that song you're criticizing is only one passage in the song. The song is from a prayer called the Exsultet found here:
Exsultet - Wikipedia
You can scroll down for the latin/English version of the song.
And, by the way...on the same Wikipedia page of the Exsultet, there is also the Methodist version and the Lutheran version of the song. So, by your own 'logic', if you're condemning Catholics for 'praying to lucifer', you'd have to be condemning some non-Catholics for doing the same thing.