Download-SharePointDirectories.ps1

#Function to Download All Files from a SharePoint Online Folder - Recursively
$FolderName = "Name the folder you are downloading" 
#The transcript will capture the process to ensure you have a log of the download/transfer - ALWAYS KEEP LOGS
Start-Transcript -Path "C:\temp\$FolderName.txt"
Function Download-SPOFolder([Microsoft.SharePoint.Client.Folder]$Folder, $DestinationFolder)
{  
    #Get the Folder's Site Relative URL
    $FolderURL = $Folder.ServerRelativeUrl.Substring($Folder.Context.Web.ServerRelativeUrl.Length)
    $LocalFolder = $DestinationFolder + ($FolderURL -replace "/","\")
    #Create Local Folder, if it doesn't exist
    If (!(Test-Path -Path $LocalFolder)) {
            New-Item -ItemType Directory -Path "$DestinationFolder\$FolderURL" | Out-Null
            Write-host -f Yellow "Created a New Folder '$DestinationFolder\$FolderURL'"
    }
            
    #Get all Files from the folder
    $FilesColl = Get-PnPFolderItem -FolderSiteRelativeUrl $FolderURL -ItemType File 
    #Iterate through each file and download
    Foreach($File in $FilesColl)
    {
        Get-PnPFile -ServerRelativeUrl $File.ServerRelativeUrl -Path $LocalFolder -FileName $File.Name -AsFile -force
        Write-host -f Green "`tDownloaded File from '$($File.ServerRelativeUrl)'"
    }
    #Get Subfolders of the Folder and call the function recursively
    $SubFolders = Get-PnPFolderItem -FolderSiteRelativeUrl $FolderURL -ItemType Folder
    Foreach ($Folder in $SubFolders | Where {$_.Name -ne "Forms"})
    {
        Download-SPOFolder $Folder $DestinationFolder
    }
}  

$SiteURL = "https://contoso.sharepoint.com" 
$FolderSiteRelativeURL = "Shared Documents/subsite/subsitex/$FolderName" #Use the variable so you only have to change the text once.
$DownloadPath ="C:\temp\"
  
#Connect to PnP Online
Connect-PnPOnline -Url $SiteURL -Interactive
  
#Get the folder to download
$Folder = Get-PnPFolder -Url $FolderSiteRelativeURL
  
#Call the function to download all files from a folder
Download-SPOFolder $Folder $DownloadPath
Stop-Transcript

15/08 - Modified line 33
$FolderSiteRelativeURL = "Shared Documents/subsite/subsitex/$FolderName" #Use the variable so you only have to change the text once.