The play next button has been removed permanently? Can’t find it anywhere. Guessing this article is just old?

Hello austinbarrow,

Thanks for using Apple Support Communities. If you haven't already, take a look at the steps in the Related Article at the top of this page. If you're not seeing the expected options, restart your iPhone. Restarting can resolve many unexpected issues. Restart your iPhone - Apple Support

It's also a good idea to make sure that the software on your iPhone is up to date. Having the latest iOS version ensures that apps and features work as expected. Update your iPhone, iPad, or iPod touch - Apple Support

Let us know the results. Be sure to include any other troubleshooting steps that you may have tried.

Have a nice day!