A family of Microsoft word processing software products for creating web, email, and print documents.
We should distinguish between the confusing "predictive text" and "AutoCorrect" in Word jargon.
AutoCorrect in Word is very different from "predictive text" and the AutoCorrect in phones. Predictive text can be turned off in Word and in Windows (separately).
Generally, the AutoCorrect feature in Word is very useful. Here is more about that feature:
I always uncheck the option to have AutoCorrect automatically use suggestions from the spelling checker. That is the option in the red box is the screenshot shown below.
You can turn AutoCorrect off, but I strongly recommend against doing that, and instead, learn how to have it actually help you.
(That is the Orange box in the screenshot.)
The control for predictive text is found in Advanced Options.
How to turn off predictive text in Windows (not Word): https://www.windowsdigitals.com/how-to-turn-on-off-text-prediction-in-windows-10/ Your browser may also have predictive text as can other software.
If you are trying to let Microsoft know how much this annoys you, you are in the wrong place because decision makers will not see what you post here. See the article linked below.