Sound output not working to another device

iPad Pro 5th generation: I cannot get the sound to output to headphones or external speakers using hard wire. Swiping from upper right I do not get a menu that gives me options or choices like so many online videos show, while music is playing from Music or Pandora or DJ. I am using a USB-C to USB-A connector. I can use a BlueTooth Receiver, but I am an Audio Pro whose gold standard for reliability is hard wire.