Seeking solutions for connecting an external microphone to iPhone15

Hello, I would like to ask if there is any way to disable my iPhone15 to detect the external usbC microphone I connect as a headphone. Whenever I plug in my mike, VO speech gets muted, which makes it impossible for me to navigate my phone screen.
If there is no way to change the setting, is it necessary to purchase an audio adapter? If so, what items work best?