A family of Microsoft word processing software products for creating web, email, and print documents.
I don't think you can change which key that should be used; at least, this isn't mentioned in the support article at https://support.microsoft.com/en-us/office/editor-text-predictions-in-word-7afcb4f3-4aa2-443a-9b08-125a5d692576.
As George Jiang proposed, you can send feedback to Microsoft.
Programmers and decision makers at Microsoft do not look for product feedback in the forums.