An interesting aspect of Tolkien's Lord of the Rings is the almost complete absence of references to any organized religions. I'm sure this was deliberate on Tolkien's part.
As for the question -- of course it's not Christian, since Jesus didn't live in Middle Earth. If you meant, "Is it more Christian-like or pagan-like?" the answer is "Neither." There are almost no religious references in the book.
No, but it was based on the tale " Beowolf" an ancient icelandic tale, IIRC. After Tolkiens experiences in WWI, it would not surprise me if he was a " fallen away Christian".
He was very Christian, not fallen away at all.
https://www.learnreligions.com/c-s-lewis-and-j-r-r-tolkien-christian-theology-249783
Tolkien was so Catholic (important; not Christian. Catholic) he converted C. S. Lewis and inspired him to write Chronicles of Narnia.
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