Ugly walls on my prints

[bustercze]

Hello guys
,I just this week bought my first 3D printer because i want to start building my own flight sim accesories. But i am having this very weird issue with quality of walls on my prints.
I dont even know how to realy describe it so i am attaching a picture of it as well as picture of my slicer settings.
Does anyone know what could be the reason behind it?

Please be patient with me its my first time trying 3D printing.
My printer: Creality Ender 3
My slicer: Creality Slicer

Thanks in advance for any help you can provide me.