Rip CD's to iPhone without iTunes

See if these references help

iTunes for Windows 10, here --> Download and use iTunes for Windows 10 - Apple Support

Import songs from CDs into iTunes on PC - Apple Support

Sync your iPhone, iPad, or iPod using your computer - Apple Support

See -> Manage subscriptions on Apple TV

Manage subscriptions on Apple TV – Apple Support (UK)

• You can modify or cancel subscriptions available on Apple TV, including Apple Music, Apple TV channels, Apple Arcade or individual apps.

bristpi176 wrote:

It seems all the answers I've seen to this question need iTunes, which no longer works.

Where did you get that idea?

iTunes still exists on Windows, and still rips CDs just fine.

Follow the steps for iTunes.

click here ➡ Import songs from CDs into iTunes on PC - Apple Support

A new Music App is currently being beta tested for Windows.

How are you trying to do it exactly?

What exactly happens when you sync?

Are the CDs already in the iTunes Library on the Windows computer?

If so, what happens when you click on the sync button?

Use iTunes to sync your iPhone, iPad, or iPod with your computer - Apple Support

You need to explain what you are doing and what if anything happens, if you want any kind of help.

Rip CD's to iPhone 

No, you rip / import CD to your Windows computer, not to your iPhone.

See -> Import songs from CDs into iTunes on PC -> Import songs from CDs into iTunes on PC – Apple Support (UK)

See -> Use iTunes to sync your iPhone, iPad, or iPod with your computer

Use iTunes to sync your iPhone, iPad, or iPod with your computer - Apple Support

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scroll to -> Sync or remove content using iTunes

Note: * You can only sync your device with one iTunes library at a time. If you see a message that your device is synced with another iTunes library, your device was previously connected to another computer. If you click "Erase and Sync" in that message, all content of the selected type on your device will be erased and replaced with content from this computer.