hi my dotnet project dose not install and i dont know what to do

### URL

https://dotnet.microsoft.com/en-us/learn/dotnet/hello-world-tutorial/intro

### Operating system

macos

### More information about your system

_No response_

### Description

my dotnet dose not install and i have problem writing c # in the vs code

### dotnet --info

_No response_

Start with the linked Hello World tutorial and reproduce the installation and C# editing problems on macOS. Collect the missing `dotnet --info` output and the exact failure details; the issue is ready for action when the failing tutorial step or installation problem is identified clearly enough to verify.

Written by the indexing model from the issue text.