how to turn off voice control on text messaging

Hi TS145,

We recommend that you try the steps in the link below to learn how to turn off Dictation on your iPhone.

Dictate text on iPhone - Apple Support

To perform the recommended troubleshooting steps via the link above, complete the steps in the section titled "Turn on Dictation."

1. Go to Settings  > General > Keyboard.

2. Turn on Enable Dictation.

We recommend the steps above because they will show you how to turn on Dictation on your iPhone.

In the event you'd like to turn off Voice Control on your device, check out the following link:Turn off Classic Voice Control on your iPhone, iPad, or iPod touch - Apple Support

Please do not hesitate to reach back out to us if you have questions or need any additional support.

Thanks for using the Apple Support Communities.

Cheers!