disable mic for all programs besides one

I have a microphone I want to keep enabled but I only want one single app allowed to even access it (unselectable / can’t even see a selection for the mic in all programs besides the one I select)

I’ve searched everywhere and all people say is “disable the microphone” which no I want it always active, always unmuted, always selectable in the one app I want, and literally impossible to have it used in every other app

is this possible or is windows 10 just bad