Hi PatrickNielsen25,
I'm Rodrigo and I will help you.
Windows 11 requires some security measures that are only present on the latest processor models. That's why your processor is not supported.
You can see the Intel supported models on the link below
https://docs.microsoft.com/windows-hardware/des...
You can still install windows 11 on unsupported hardware, but it is not recommended and you will not be able to receive updates. More information about it in the link below