Edit Excel Cells then download it with keeping the sheet styles

I have an Excel file that is stored in my server with some Dynamic Data. I want to Edit the Data in The Sheet then Download the Excel with Keeping the sheet format .
I am Already Editing the Data in Excel but I can’t keep the original style of the Sheet.
i am using maatwebsite/excel package with Laravel 8.

my controller code:

        public function generateArtisanalFile(Request $request){
                $lins=new ArtisanalImport();
                $data= Excel::import($lins,public_path('storage/delivered/CI-model.xlsx'));

                $export = new AsrisanalFileGenerator($lins->data);
                return Excel::download($export, 'model.xlsx');
}

The Import Class :

class ArtisanalImport implements ToCollection
  {

    public $data;

    public function collection(Collection $rows)
    {
       $rows[7][1]='karim El Hajjami';
       $rows[3][0]='Delivered';
       $this->data=$rows;
 
     }
   }

this is the Export Class:

class AsrisanalFileGenerator implements FromCollection
 {
   public $data;

   public function __construct($data){
    $this->data=$data;
  
   }

   public function collection()
   {
      return $this->data;
   }

 }