Microsoft has pulled its PC Health Check app, but there is already a third-party tool that does a better job at detailing why Windows 11 may not run on your PC. WhyNotWin11 separates Windows 11's system requirements into 11 areas and explains why you can change to run Microsoft's latest OS.
https://www.notebookcheck.net/WhyNotWin11-A-tool-that-is-much-better-than-Microsoft-at-detailing-why-a-PC-is-not-Windows-11-compatible.548201.0.html