Go installed successfully but no output with simple Hello World

Using Windows 11 Pro, installed Go using the installer.
Here is my main.go file:

package main

import (
	"fmt"
	"time"
)

func main() {
	fmt.Println("Hello world")
	time.Sleep(2 * time.Second)
}

And all relevant info I can think of:
Powershell version:
PS C:\Users\fares.alghazy\go\src> $PSVersionTable.PSVersion

Major Minor Build Revision

5 1 22621 1778

GO extension settings.json:

{
    "explorer.confirmDelete": false,
    "terminal.integrated.scrollback": 100000,
    "editor.minimap.enabled": false,
    "[javascript]": {
        "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "workbench.editorAssociations": {
        "*.db": "default",
        "*.docx": "default"
    },
    "[json]": {
        "editor.defaultFormatter": "vscode.json-language-features"
    },
    "[php]": {
        "editor.defaultFormatter": "Sophisticode.php-formatter"
    },
    "editor.formatOnSave": true,
    "prettier.tabWidth": 4,
    "[typescript]": {
        "editor.defaultFormatter": "vscode.typescript-language-features"
    },
    "[dockercompose]": {
        "editor.defaultFormatter": "ms-azuretools.vscode-docker"
    },
    "typescript.updateImportsOnFileMove.enabled": "always",
    "javascript.updateImportsOnFileMove.enabled": "always",
    "[jsonc]": {
        "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "[html]": {
        "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "[typescriptreact]": {
        "editor.defaultFormatter": "vscode.typescript-language-features"
    },
    "diffEditor.ignoreTrimWhitespace": false,
    "workbench.startupEditor": "none",
    "[vue]": {
        "editor.defaultFormatter": "Vue.volar"
    },
    "audioCues.lineHasBreakpoint": "off",
    "audioCues.lineHasError": "off",
    "audioCues.lineHasInlineSuggestion": "off",
    "audioCues.noInlayHints": "off",
    "audioCues.onDebugBreak": "off",
    "audioCues.volume": 0,
    "audioCues.lineHasFoldedArea": "off",
    "go.gopath": "C:\\Users\\myuser\\go",
    "go.goroot": "C:\\Program Files\\Go",
    "files.autoSave": "afterDelay",
    "go.alternateTools": {
    
    }
}

System/Directory Info:

PS C:\Users\myuser\go\src> pwd

C:\Users\myuser\go\src


PS C:\Users\myuser\go\src> ls


    Directory: C:\Users\myuser\go\src


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
-a----         28-Jul-23  12:00 PM            122 main.go


PS C:\Users\myuser\go\src> go version
go version go1.20.6 windows/amd64
PS C:\Users\myuser\go\src> go env
set GO111MODULE=
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\myuser\AppData\Local\go-build
set GOENV=C:\Users\myuser\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\myuser\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\myuser\go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.20.6
set GCCGO=gccgo
set GOAMD64=v1
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=0
set GOMOD=NUL
set GOWORK=
set CGO_CFLAGS=-O2 -g
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-O2 -g
set CGO_FFLAGS=-O2 -g
set CGO_LDFLAGS=-O2 -g
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=C:\Users\myuser~1.ALG\AppData\Local\Temp\go-build1704880455=/tmp/go-build -gno-record-gcc-switches 

The problem:

Action run:
go run main.go
Expected output:
> Hello world
Received output:
Terminal stalls (even without the time.sleep) then nothing happens

Attempted fixes:
1- Attempted to use go build then running the exe, no output was received
2- Attempted to build then redirect the output to a file:
go build main.go
.\main.exe >output.txt
output.txt was created but empty
3- Checked console encoding : Active code page: 65001
4-Disable Antivirus or Security Software: I am using standard windows security features, no 3rd party security software installed
I have even tried re-installing the Go software, restarting my pc, restarting VS code, etc
Why is my code not showing output? What can I do to fix it?
Update 1:
As instructed by @mkopriva:
go mod init my_app produce the following go.mod file:

module my_app

go 1.20

My new directory is:

PS C:\Users\myuser\Desktop\Development\go\my_app> ls


Directory: C:\Users\myuser\Desktop\Development\go\my_app


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
-a----         28-Jul-23   1:14 PM             27 go.mod
-a----         28-Jul-23   1:15 PM            125 main.go

No changes with go run main.go, or with building then running. Still not getting an output.

Go programs are often falsy recognized by anti-virus software to be malicious, even though they are not. There is even a FAQ entry on this topic in the official Go documentation.

Windows defender will often delete your executable file right after compilation. Instead of using go run main.go you can instead take the two steps separately by first calling go build main.go and then trying to run main.exe. This will fail when Windows deletes your executable right after creation. I have seen compiled DLLs disappear after over a minute, when I thought I was safe, so beware that the executable might not be deleted right away, but maybe seconds or even minutes after compilation.

When you call go run main.go it will build the executable in a temporary folder under your %APPDATA%'s Local path, in a folder called go-build.

You might want to create an exception rule in your Windows defender to ignore go-build folders in your APPDATA. You should also exclude GOPATH and GOBIN from anti-virus scanning, you probably will build and run code there as well.