How to report pronunciation mistakes to Apple and Google

Send feedback about Google Translate Pronunciation

When Siri or Google assistant, mispronounces a word, how do you get them to fix it? Is there any kind of crowdsourcing mechanism to improving TTS (text to speech) for these platforms?

When I search Google, there are some results for it, but mostly it is about getting Siri to pronounce names in your address book correctly. I'm talking about fundamental mispronunciations. For example Avanade is clearly indicate as /ˈævənɑːd/ on Wikipedia, as well as numerous, YouTube examples, and yet both Google and Apple think it is /ˈævəneid/).

https://www.google.com/search?q=how+to+report+pronunciation+mistakes+to+Apple&gs_ivs=1

I did notice that you can give feedback to Google Translate, but not sure if it is the same TTS engine as Android or Google Assistant.