Are you a network domain user? If you are connected to a School or Work Account,remove it. You can also reset or repair the Windows Defender app in the settings. If not, you have to modify some settings in Windows. Make sure you are an administrator on your computer before doing that.
Follow this link:
In this article, I will show you how to Fix: Some of these settings are managed by your organization in Windows 11. This is an error or warning that could appear in Windows 10 as well and is now present in Windows 11. Let's see how we can get rid of it. Using a school
itstechbased.com
This link can help as it can fix "Some of these settings are managed by your organisation"
"Some of these settings are managed by your organisation"
This Message indicates if some of the settings are blocked in your PC including this.
Hope it helps! Thanks!