Probably not possible with so many critical factors missing. You need UEFI, GPT disk and Secure Boot at least. Your machine will not be able to be altered or configured to run Windows 11.
I have an older laptop with UEFI, Secure Boot and TPM1.2 and an unsupported processor and it is running Windows 11 Insider.
Try joining the Insider Program (Windows Update) and see if you can get Windows 11 that way to take a look.
Otherwise, Windows 10 is good until mid-2025 so that allows lots of time to consider things.