Final answer:
There could be several reasons why your phone volume keeps going down by itself, such as a software issue, a physical issue with the volume button, or certain app or system settings overriding the volume control.
Step-by-step explanation:
One possibility is that there is a software issue causing the volume to decrease. To troubleshoot this, you can try restarting your phone or performing a software update to see if it resolves the issue.
Another potential cause could be a physical issue with the volume button or rocker. If the button is stuck or damaged, it may be registering unintended presses, causing the volume to decrease. In this case, you may need to have the button repaired or replaced.
Lastly, certain apps or settings on your phone may have volume controls that override the system volume. Check your app settings and the settings for specific features like media playback or notifications to ensure they are not set to automatically decrease the volume.