'Terraces' on sloping surface

[elektronaut]

EDIT: Just found this article and will try to print the body tilted upwards so the slope is not on the top but on the side. And update this post with the result.
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Hi everyone!

I'm trying to print a body with a sloping surface and get an ugly texture.
I'm assuming these are the layers, is that correct?
How can I prevent this?

This is what it looks like:
IMG_2209.jpg
It's partly a design issue as the line texture is not parallel to the short edges, here's an inspection view taken in Fusion 360:
inspect_6.jpg
I would be happy to get an advice how to better align the surface during modeling.

But getting rid of the texture completely is the main problem, I'm guessing that's not a design problem, or?

This is a screenshot from Cura which already shows the lines:
slice4.jpg
Here are the print settings: Click me

Thanks in advance for any help!