This article explains how to create a playlist directly on your iPad using the Music app. Instructions apply to iPads running iOS 12 and later iPadOS versions.
How to Create a Playlist on iPhone, iPad, and iPod touch — Apple Support
Before you can organize your songs into playlists, you'll need an empty playlist.
On the iPad home screen, tap the Music app.
If Music doesn't open in Library view, scroll to the bottom of the screen and tap Library.
