Cheers!Being an older IT professional, I still follow the rule that you should not deploy a new Microsoft OS for a while. Let others find the problems first. Microsoft list Windows 11 requirements is available at: https://www.microsoft.com/en-gb/windows/windows-11-specifications
The Trusted Platform Module (TPM 2) requirement is more likely to be the limiting factor on most older PCs (and some newer ones). Some systems, like mine, have TPM 2 but turned off by default. These will be reported as incompatible, until you make the required changes to the bios.
As said earlier, anyone running WIndows 7 or earlier needs to consider their options. No security updates are being released for those version s of Windows.
That said there are still millions of WIndows XP systems out there!