How download iTunes in my iPhone no have iTunes

On my iPhone, the app to play music is called Music. Its icon features two white sheet-music-style notes against a red background. This app will play music from your own CDs, music purchased from the iTunes Store, or music to which you have access because of an active Apple Music Subscription, but the way that you load it with music depends on the source.

To load music from your own CDs into your iPhone, you need to get the music onto your Mac or PC, and then sync your iPhone to your Mac or PC. In current versions of macOS, you would use the Music app and the Finder. In old versions of macOS or on a Windows PC, you would use iTunes (Mac or PC version).

Intro to syncing your Mac and your devices - Apple Support

You can buy music from the iTunes Store directly from the iPhone. There's another built-n app called iTunes Store whose icon is a white star on top of a purple background.

If you're having trouble finding an app on an iPhone, you can use the App Library screen. This is also how you can recover from the situation where you accidentally deleted the app's icon from the regular iPhone screens (but did not actually delete the app itself from the iPhone).

Find your apps in App Library on iPhone - Apple Support