Hello SethCotharn,
Welcome to the Microsoft Community.
You seem to have referenced a number of suggestions from the internet that didn't work, and since you didn't mention exactly what you tried, the steps we gave may be repetitive.
- Check the language options in Office to make sure you have added Hebrew correctly in the authoring language field and then set it as the first option.
Add an editing or authoring language or set language preferences in Office - Microsoft Support
- Repair Office
If this does not work, it is recommended that you try to repair Office, if Microsoft 365 or an Office application (such as Word or Excel) isn't working properly, you can try to fix it. Try the “Quick Fix” first, if that doesn't work try the older and more thorough “Online Fix”. You may need to restart your computer after you're done.
For more information, see: Repair an Office application - Microsoft Support
- In addition, when you use Office in a new local account environment, does everything work.
Please refer to this link to create a new local account to attempt a reinstallation and logon, this will generate a new user profile for troubleshooting in case of problems in the current user's environment.
Manage user accounts in Windows - Microsoft Support
- As a troubleshooting exercise, it is also possible to visit Microsoft 365 Web via a browser to see if the issue encounters the same problem.
I hope this is useful and please feel free to share any results.
Best regards,
Ian - MSFT | Microsoft Community Support Specialist