iCloud only syncs my Purchased Music to my iPhone 12 - Need Other Songs for my Zumba Class

I have forgotten to mention, that clicking on the blue linked text will open an Apple help article, explaining in detail how to proceed.

What you will need to do is creating playlists to sync, and then select those playlists, instead of syncing the entire music library:

1. Open the Apple Music app or iTunes.
2. In the menu bar, choose File > New > Playlist.
3. Give your playlist a name.
4. Drag and drop music to your playlist in the sidebar.

Then connect your iPhone to the computer, open iTunes, select the device, just like you do with your iPod:

Then select to sync "Selected playlists..." instead of "Entire music library" in the right side of your iTunes window.

If you selected the option to sync playlists , a new menu will be shown, giving you the option to check the box in front of your created playlist, albums, etc.

After that click on "Apply" to start syncing.

Images copied from: Use iTunes to sync your iPhone, iPad, or iPod with your computer - Apple Support

Creating a playlist is described more detailed in this article:

Create, edit, and delete playlists in iTunes on PC - Apple Support

Sorry for confusing you, if I understood correctly, you have been syncing your music, that is part of your iTunes library on your computer, to your iPod Touch.

And now you want to sync songs to your iPhone as well, and you are afraid, that syncing to a second device will mix up the content on your iPod Touch.

Syncing to more than one device will not change the content on other devices. Your iPod Touch sync settings will stay the same and you can set up different sync scenarios for your iPhone or any other iOS device you connect to sync content.

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

Did you try to create a playlist in Apple Music that is containing the songs you want on your iPhone?

Apple Music can only stream or download songs onto your iOS iPhone, that are part of the Apple Music collection.

One more thing: You don't need to add another app to your iPhone, the iTunes app on your computer has been renamed to "Music" on the iPhone.

If you connect your iPod Touch again after syncing your iPhone, iTunes will remember the settings for syncing for each device and show you the latest setup for the device currently connected.

So in your case, with the iPod connected you will see, that syncing your entire library will still be selected.

And if you connect your iPhone, iTunes will show the previous selected items to sync for the iPhone, syncing the entire library should be not enabled and the selected playlist and/or albums, artists... will be shown.

Newer iPhone models come with the USB-C to Lightning Cable, which can be used, if your PC or Mac has an USB-C port instead of an USB-A port.

You can also use this USB-C to Lightning Cable to charge your new iPhone, connecting it to an Apple USB-C power adapter.

USB-C to Lightning Cable

USB-A to Lightning Cable

Photos copied from the Apple Online Store.

You're welcome 🙂

Good Luck!

That is a lightning-to-USB A cord. It will work just fine with your iPhone 12 mini as long as you have have the right kind of adapter to plug it in to.