Your app is rejected due to the policy here: https://support.google.com/googleplay/android-developer/answer/9888374
Most likely this is the policy that it breaks:
App titles and icons that are so similar to those of existing products or services that users may be misled
Google is probably worried that the icon is just an microphone icon, which is used in other places in the Android system, and may therefore mislead users that the app is related to Android or Google.
Therefore, I suggest modifying your icon to differentiate it and make it unique, and then they should accept it.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…