How to make such a screen in Xamarin and what should the data structure look like?

Question

XAML

I'm learning Xamarin, I copy the application in it on the main screen, this layout is:

[Category.Name]
[Card width=50%] [Card width=50%]

[Category.Name]
[Card width=100%]

[Category.Name]
[Card width=50%] [Card width=50%]
[Card width=50%] [Card width=50%]
[Card width=50%] [Card width=50%]

[Category.Name]
[Card width=100%]

[Category.Name]
[Card width=100%]

.....Scroll

Answer 1

And how are we supposed to understand this? Really?)