Hello RSnodg,
This article details all of the adjustments you can make to the iPhone volume and under what circumstances: Adjust the volume on iPhone.
"Adjust the volume on iPhone
When you’re on the phone or listening to songs, movies, or other media on iPhone, you can use the buttons on the side of your device to adjust the audio volume. Otherwise, the buttons control the volume for the ringer, alerts, and other sound effects. You can also use Siri to turn the volume up or down.
Siri: Say something like: “Turn up the volume” or “Turn down the volume.” Learn how to use Siri.
WARNING: For information about avoiding hearing loss, see Important safety information for iPhone.
Lock the ringer and alert volumes in Settings
- Go to Settings
. - Tap Sounds & Haptics (on supported models) or Sounds (on other iPhone models).
- Turn off Change with Buttons.
Adjust the volume in Control Center
When iPhone is locked or when you’re using an app, you can adjust the volume in Control Center.
Open Control Center, then drag 
.
Temporarily silence calls, alerts, and notifications
Open Control Center, tap Focus, then tap Do Not Disturb. (See Set Do Not Disturb.)
Put iPhone in silent mode
To put iPhone in silent mode 
, set the Ring/Silent switch so that the switch shows orange. To turn off silent mode, set the switch back.
When silent mode is off, iPhone plays all sounds. When silent mode is on, iPhone doesn’t ring or play alerts or other sound effects (but iPhone may still vibrate).
Important: Clock alarms, audio apps such as Music, and many games play sounds through the built-in speaker, even when silent mode is on. In some countries or regions, the sound effects for Camera, Voice Memos, and Emergency Alerts are played, even when the Ring/Silent switch is set to silent.
On iPhone, there are several ways to protect your hearing from loud volume while listening to headphone audio. See Use headphone audio level features on iPhone."
You can certainly leave feedback on this functionality. No one is better qualified to provide feedback about Apple products and services than the people who use them. The following link will get you started: Product Feedback.
Let us know if we can help with anything else at all. Thanks and have a fabulous day!
