Hey Msieger89,
We are unsure if this issue occurs while using the Music app analog with Apple Music. If that's the case, you may want to verify if AutoPlay is enabled, using these steps:
"Let Autoplay pick what plays next
Autoplay takes the work out of choosing what to play next. Just play a song, then Autoplay finds similar songs and plays them afterward.
To see your Autoplay queue:
- Tap the song that's playing at the bottom of your screen.
- In the lower-right corner of your screen, tap Playing Next .
- Scroll down to Autoplay.
To turn Autoplay on or off, tap the Autoplay button in the upper-right corner of your screen. If you turn off Autoplay on one of your devices, then Autoplay is turned off on any device that's signed in with your Apple ID."
You can find more details here: Add music to your queue to play next on your iPhone, iPad, iPod touch, or Android device
If you need further assistance, we suggest that you reach out to Apple directly. You can follow this link to connect with them:
Get Support
All the best.