I'm not sure where are you looking, but it is readily available on BrickLink in seven colors: https://www.bricklink.com/v2/catalog/catalogitem.page?P=30031&idColor=85#T=C&C=85
In your LEGO program or webpage type in the part number instead, which would be, "30031".
Why: Search words vary across media, and it's harder to misspell or mis-describe numbers.
On Bricklink.com the description includes the "s" to spell handlebars.
In LEGO Digital Draw the description just calls this piece a "handle" and drops the "bars".
Search fields can get finicky.