Here is how to submit feedback on the broadcast TVapp.
Xiaomi redmi 10X 4G
MIUI12.21.1 Stable release
Click on my TVapp and then click on [My].
Click About to enter my screen, click About.
Click Feedback to enter the "About Us" interface, click "Feedback".
Click Submit to enter the feedback interface, enter the feedback content and method, and click [Submit].