Transfer music from a CD to my iPhone?

I have the Michael Buble Christmas Album on CD and decided to try putting it on my phone. I can transfer it to my iTunes library on my Windows 10 Pro PC, but it won't let me put it on my iPhone. When I go to see if maybe I can just download it through the iTune's store, it shows I'd need to buy it for $11.99.

However, seeing as I already own the CD, I'd rather not pay again for this album.

That being said, is there a way for me to do this that doesn't violate any of Apple's policies? Aka can I not just transfer the CD from iTunes to my phone? If so, how would I be able to do this.

Thanks in advance for any help!