in order to run pre-release version of windows 11 on unsupported hardware, you must have been in the Dev channel prior to the 24th June and remained there.
if the device was not already in the Insider Dev channel prior to th24th June (or you have clean installed windows 10 since), the device must meet the minimum specs
Windows 11 Specifications - Microsoft
be sure to check the link to compatible CPUs in the blog article.