Specifically the image on the left.
and for this image, I have no clue where I’d even begin!
Those look like some figma designs.
I’d start in a design class
If your question is about how to build something like that in Bubble then you can do as follow. You set the background image, put the header and the paragraph, then add the button :))) You can search for pattern making app or use canva to create the background.