Why does iPhone Music app show me "Apple Music" logo instead of my iTunes songs? I synced all of the music in my iTunes Library to my iPhone (like it was an iPod).

I've been listening to the music in my Jeep for weeks by plugging into the USB port and choosing songs and playlists from the in-car radio's touchscreen.  (So I know the music is on the iPhone.)

Today, I want to listen to my music with headphones.  Thought I'd try Siri ... I told Siri to "Play Accept Yourself by The Smiths", and sure enough she played it!  (I thought it was pretty cool that worked, actually.)

When the song ended, I thought I'd chose something manually.

On the iPhone I touched the "Music" app/button on the home screen, it took me to a photo of a girl wearing headphones and the "Apple Music" logo.

No lists of songs, no other options.

I went to the "Settings" app, and selected "Music" and I noticed that "Show Apple Music" was switched to ON.  So I turned it OFF.

Went back to the "Music" app, and there's still nothing but the photo of the girl and the "Apple Music" logo.

What am I doing wrong?  How can I see the songs that are my iPhone?

Thanks!
I've learned more ... I may have an answer to my question.

According to this article here ... when I told Siri to "Play Accept Yourself by The Smiths", she may have played that from Apple Music, not from my own library.

That would explain why "Apple Music" got turned on.

But I don't know why this would happen because I did not renew my Apple Music subscription after the trial last summer.

After ensuring the "Show Apple Music" setting was OFF, I powered off my iPhone.  Restarted, and it looks like I'm back to "iPod" mode in Music.