i cant update itemcount - flutter

Question

hey why is my itemcount not working i have 6 rows in my database but when i run the code it show me only one row and the other rows not showing it
this is my code:
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
class my_ads extends StatefulWidget {
const my_ads({Key? key}) : super(key: key);
#override
State<my_ads> createState() => _my_adsState();
}
List list = [];
int select_item = 0;
class _my_adsState extends State<my_ads> {
#override
Future ReadData() async {
var url = "https://***.***.***.**/getData.php";
var res = await http.get(Uri.parse(url));
if (res.statusCode == 200) {
var red = jsonDecode(res.body);
setState(() {
list.addAll(red);
});
print(list);
}
}
#override
void initState() {
super.initState();
GetData();
}
GetData() async {
await ReadData();
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: ListView.builder(
itemCount: list.length,
itemBuilder: ((cts, i) {
return Container(
height: 800,
child: ListView(
children: [
Container(
margin: EdgeInsets.only(left: 70, right: 60),
height: 54.0,
width: 224.0,
child: Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xffF4AC47), width: 5),
color: Color(0xff42A9D2),
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(40),
bottomRight: Radius.circular(40))),
child: new Center(
child: new Text(
"MyAds",
style: TextStyle(
fontSize: 25,
color: Color(0xff072A52),
fontFamily: 'Cairo'),
textAlign: TextAlign.center,
),
//end logo
)),
),
///start Section
Container(
margin: EdgeInsets.only(left: 10, right: 10, top: 10),
height: 180.0,
width: 430.0,
child: Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xff42A9D2), width: 5),
borderRadius: BorderRadius.circular(8)),
child: new Container(
child: Row(
children: [
Expanded(
child: Image(
image: AssetImage("assets/book.jpg"),
)),
Container(
margin: EdgeInsets.only(
left: 110, top: 30, right: 13),
child: Column(
children: [
Text(
"test",
style: TextStyle(
fontSize: 20, color: Colors.black87),
),
SizedBox(
height: 20,
),
Row(
children: [
Text("test2"),
Icon(Icons.perm_identity_rounded)
],
),
SizedBox(
height: 5,
),
Row(
children: [
Text("}"),
Column(
children: [Icon(Icons.store)],
)
],
),
],
),
)
],
)
//end logo
)),
),
],
),
);
})));
}
}
i tried to change ListView to ListTile but the design will be detroyed becuse i need to make the same design to other pages but my problem is with itemcount its not making any changes ! please if you have any ideas with my problem give me ansewrs