Presumably you downloaded Microsoft Keyboard Layout Creator (MSKLC), which I still had to do to make a custom keyboard layout in 2022. Funnily enough I was also wanting to use AltGr to add diacritics to vowels, because I don’t want to have to go to the backtick key for àèìòù
They spent a fifth of their sovereign wealth fund covering their budget deficit last year, I’m not sure that Russia has the capacity to scale things up