Why cant I download new songs on my Apple Music premium

Hi there, Mahk18!
Thanks for reaching out to the Apple Support Communities! It sounds like you are having an issue downloading songs with Apple Music and I am happy to help out! First, I recommend you check out this article with steps for How to force an app to close on your iPhone, iPad, or iPod touch and close the Music app. Once that is done, Restart your iPhone, iPad, or iPod touch then check to see if you are still noticing the issues downloading music. If you are still noticing the issues, please test to see if the issue is occurring on a different Wi-Fi or when using cellular data on your device.
Let me know the results and take care!