The thing with Tolkien’s diction is that it shifts as the story progresses to other areas of Middle-earth. It’s starts off with a rather comfortable, discursive 20th-century style for the Hobbiton scenes, and when the action shifts to other areas the diction becomes much grander to match, like the Medieval Gondor or the Old English Rohan. Sometimes he will purge his writing entirely of words not derived from Old English sources, which truly makes it feel like you’ve travelled to a different place, and in The Return of the King especially he has a very elevated tone, compact, declarative, unafraid of inversion, with a very satisfying balance of iambic and trochaic pulses (it reads well aloud). You’ll also notice that when Aragorn throws off his persona as Strider and assumes the mantle of King of Gondor he often starts speaking in Homeric dactyls, the rhythm and cadence of the heroic Epics, whereas if the Hobbits were ever to start speaking in verse rather than prose it would probably be in common iambs, there are lots of little touches like that that endear LOTR to me.

Like most people here are saying, it’s not for everyone, which may be why so few fantasy writers copy Tolkien’s stylistic strategy in this (they’ve stolen plenty of other things of course). Most fantasy writers show their world by simply railroading you from place to place and then throwing a bunch of invented history at you, but I personally thought that Tolkien’s method with language was the only one that actually made you feel like you’re in a different world. People who have read lots of older quainter books or large epics usually do better with Tolkien than people hoping to curl up with something cosy. Personally I prefer being thrown out of my comfort zone when I read something new rather than just curling up with something that will give me everything I expect a book of its kind to do. It sounds like you’re not going to get out of The Lord of the Rings what Tolkien put into it, so there’s no shame in putting it down and reading something you think will be more worth your time. There are so many masterpieces out there to read that I think you would be doing yourself a disservice if you instead spent your time on a book that didn’t give you anything in return.