It could be due to a newer update or the app itself might have bugs. If the Google app is not responding, try “Force Stop” via going into the App Settings on your Android device. Its possible that maybe the Ok Google commands stopped working just after you installed a new Google app update.
Why doesnt my phone respond when I say OK Google?
If your Google Assistant doesnt work or respond to “Hey Google” on your Android device, make sure Google Assistant, Hey Google and Voice Match are turned on: On your Android phone or tablet, say Hey Google, open Assistant settings. Under Popular settings, tap Voice Match. Turn on Hey Google and set up Voice Match.
Why is voice assistant not working?
Retrain the voice model Its possible that the reason why Google Assistant is not working is that it doesnt recognize your voice. Then just tap, “Next”, and then the “I agree” option when the “Agree to Voice Match” section pops up. Then just follow the on-screen instructions to retrain the voice model.