how to map private business onedrive to view within sharepoint folder

StefBon  Mhm.....
Well, the link is just a link to a folder on the Onedrive website. You will still need to share that folder with you entire company or they will get a "permission denied" error

But in your case...

Could you just directly synchronize the desired local folder in your SharePoint structure using the Onedrive client? (I mean by navigating to the folder in SharePoint and then pressing the "Synchronize" button). Then the maps would be directly synced into the structure without Onedrive as an extra waypoint.
If that functionality is disabled by your IT-Department, you should go, talk to them and ask them for an exception, as this seems to be a valid usecase for that functionality.

Or you could think about other synchrinization methods

You could for example use PnP Powershell in a scheduled task to sync a local folder into a SharePoint folder

$localUploadFolder="D:\work"

$destinationSharePointSite="https://tenant.sharepoint.com/sites/filestructure"
$destinationFolderSharePoint="SiteAssets/folder1/folder2"

Connect-PnPOnline $destinationSharePointSite

Get-ChildItem $localUploadFolder -Recurse | Foreach-Object {
    
    $relativePath= $_.FullName -replace [regex]::Escape($localUploadFolder), '' -replace "\\","/"
    $path = "$($destinationFolderSharePoint)$($relativePath)"

    if ($_.Attributes -ne "Directory") {
        Write-Host "Uploading $($_.FullName) to $($path)"
        Add-PnPFile -Path $_.FullName -Folder $path
    }
    else {
        Write-Host "Scanning Folder $($_.FullName)"
    }
}

Or there is the possibility to use the SharePoint Migration Tool in a scheduled task.
https://learn.microsoft.com/en-us/sharepointmigration/introducing-the-sharepoint-migration-tool