Powershell Loop though specific json files from multiple folders and use that json file to push into Loop

Question

$tenantID = (Get-AzureADTenantDetail).ObjectId
$mg = "/providers/Microsoft.Management/managementGroups/" + $tenantID

foreach($subfolder in Get-ChildItem -Path C:\Users\xxxx\Desktop\AzurePolicies -Depth 2 -Recurse){
    Write-Host "Subfolder is " $subfolder
    foreach($file in Get-ChildItem -Path $subfolder -File *.json -Recurse){
        foreach($policy in $file){
            $displayname = (Get-Content $file -Raw | ConvertFrom-Json).properties.displayName
            Write-Host "Display name is" $displayname
            $policyname = (Get-Content $policy -Raw | ConvertFrom-Json).properties.name
            Write-Host "Policy name is" $policyname
            foreach ($item in $policy) {
                function DefinePolicies {
                    New-AzPolicyDefinition -Name $policyname -DisplayName $displayname -Policy $policy   -ManagementGroupName $tenantID
                    Start-Sleep -Seconds 2
                }
                DefinePolicies
                function AssignPolicies {
                    $policy = Get-AzPolicyDefinition -Name $policyname  -ManagementGroupName $tenantID
                    New-AzPolicyAssignment -Name $policyname -PolicyDefinition $policy -Scope $mg
                     Start-Sleep -Seconds 2
                }
                AssignPolicies
            }   
            }
    }
}    

My Files are organized as Azurepolicies/Keyvaults/Somepolicy/azurepolicy.json