Background image in parallax

Question:
[background image in parallax scrolling does not scale across devices]
Product:
wix studio
What are you trying to achieve:
[background image to scale across all breakpoints and not to zoom in]

What have you already tried:
[tried several tutorials and using the focal point to adjust]

Additional information:
[the image seems to zoom in to the image with each breakpoint instead of scaling the image to fit the smaller section]