Read Surprised By Joy some time. Then you will be aware.
Well I’ve not read that work by CSL, but I’ve read a number of others, and the description of Surprised by Joy also talk of a journey from atheism to Christianity. Again, I’m missing the focus on a certain church or denomination in any description of this book that I can find.
My own faith has nothing to do with any church or denomination, and I never found faith until I left the Presbyterian church in fact. To me, the “church” Jesus refers to is the universe of true believers, and frankly, I think only a few of them reside in mainstream churches.