Create Resource Group using ARM Template.

arm-template.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "rgLocation": {
      "type": "string",
      "defaultValue": "Southeast Asia"
    },
    "rgName": {
      "type": "string",
      "defaultValue": "myResourceGroup"
    }
  },
  "variables": {},
  "resources": [
    {
      "type": "Microsoft.Resources/resourceGroups",
      "apiVersion": "2018-05-01",
      "location": "[parameters('rgLocation')]",
      "name": "[parameters('rgName')]"
    }
  ],
  "outputs": {}
}