I already achieved the code for two rows but data is not aligning with the rows. I tried several methods to map the data but still the data is showing after the headings

This is what i want to achieved so far, this is the headings and the map

` public function headings():array{
return[
[‘Entity Name’,’Fund Cluster’],

       [
        'Date',
                'Reference',
                'Item Desc',
               
       ],
    ];

 }`

`public function map($row):array{

    $firstRowData = [
        'entity_name' => $row['entity_name'],   // Data for "Entity Name"
        'fund_cluster' => $row['fund_cluster'], // Data for "Fund Cluster"
        'date' => '',                            // Placeholder for the third column (empty in the first row)
    ];
    // Second row of headings
    $secondRowData = [
        'entity_name' => '',         
        'fund_cluster' => '',        
        'date' => $row['date'],    
        'reference' => $row['reference'],   
        'item_desc' => $row['item_desc'],  
    ];
    $mappedData = array_merge($firstRowData, $secondRowData);

    return $mappedData;
 }`