I have reinstalled my ubuntu, and reinstalling my vscode as well, the problem is that, my vscode intellisense for cpp is not working anymore (even tho i simply make a variable and calling it)

[![enter image description here][1]][1]

In above image, the intellisense doesn’t show anything according to the “hello” variable

here is my c_cpp_configuraiton.json file

{
    "configurations": [
        {
            "name": "Linux",
            "includePath": [
                "${workspaceFolder}/**"
            ],
            "defines": [],
            "compilerPath": "/usr/bin/gcc",
            "cStandard": "c17",
            "cppStandard": "c++17"
        }
    ],
    "version": 4
}

My ubuntu version: 20.04
My vscode version: 1.87.2
My c/c++ microsoft extension version: 1.21.4
[1]: https://i.sstatic.net/UeN0lXED.png