Pintrest-style board using Flutter - flutter

Question

So I want to show a Pinterest style board in my app but without StaggeredGridList, but through the normal, Container and Row/Column widgets.
Here is an image:
So at first, I tried to use Expanded to make container with the higher height, take up the height and the other take up the width, but this approach doesn't work when you want pictures below each other. So please post your code as an answer below.
My Code:
Column(
children: [
Padding(
padding: const EdgeInsets.only(left: 20, right: 20, top: 15, bottom: 12),
// parent container housing all other widgets
child: Container(
height: 220,
child: Column(
children: [
// both the pics and colours
Expanded(
child: Row( // row
children: [
// vertical pic
Container( // first child
width: 180, // give it a width, it takes up the height of parent since it is wrapped with an expanded widget
decoration: BoxDecoration(
color: Colors.blue,
borderRadius: BorderRadius.circular(
15.0,
),
image: DecorationImage(
image: NetworkImage(storiesList[0]),
fit: BoxFit.fill
)
),
),
// spacing between vertical pic and horizontal pic
SizedBox( // second child
width: 12,
),
// banner pic and colours
Expanded( // thrid child [consists a column with children ]
child: Column(
children: [
// banner pic
Container(
height: 165, // give it a height, it takes up the width of parent since it is wrapped with an expanded widget
decoration: BoxDecoration(
color: Colors.blue,
borderRadius: BorderRadius.circular(
15.0,
),
image: DecorationImage(
image: NetworkImage(storiesList[1]),
fit: BoxFit.fitWidth
)
),
),
],
),
),
],
),
),
],
),
),
)
],
)
Thanks a lot!!