i can’t seem to add a comment, clicking Add comment does nothing–the answers site has a ton of broken javascript if you open the dev tools :(, so i’m commenting through an answer, sorry in advance:
@robertbu’s answer and note about defining axes should be added to the documentation for Input.GetAxis. whenever you’re reading the docs on an API, your next question is going to be what are the valid inputs? the documentation doesn’t give any hint as to what’s considered valid or what determines what’s valid.