Hi SovannLinden, hope you're doing well. I’m Ian, an Independent Advisor and Microsoft user like you.
I'm sorry to hear about this issue.
If you are using Outlook desktop client, please follow steps below.
1, Select "Options" from the File menu.
- Select the "Mail" tab, and then click the "Editor Options" button.
3.Click the "Advanced" tab, and then clear the check mark from "Show AutoComplete Suggestions."
- Click Ok
For Outlook on the web, to turn off text predictions:
- At the top of the page, select Settings > View all Outlook settings > Mail > Compose and reply.
- Under Text predictions, clear the “Suggest words or phrases as I type” check box.
https://support.microsoft.com/en-us/office/use-...
This is a user-to-user support forum and I am a fellow user.
I hope this helps, but please let me know if you need anything else.