Windows 10 without product key for Windows Vista 32-bit?

I would like to install on my laptop Windows 10 and wanted to ask if there's this operating system for free for Windows Vista 32-bit on the Internet, for example? Do you really need a license key (product key), which can then be purchased for free on the Internet?

Vista can't be upgraded to Win10 but you could install Win10 normally (assuming your CPU is supported).

Yes you need a key but you get quite cheap. ^ - ^

To acquire for free on the Internet

Free is nothing at all, a pretty cheap key is here:

https://hardwarerat.de/...-64bit-key

You can install it herewith:

https://www.heise.de/...ation-tool