How to properly save a row in a CSV file to import a WooCommerce product?

Question

PHP

I have a parser, everything works well, except for the record, it somehow writes crookedly. Here is my code:
Here I process the date, turning it into a string to write ( 1 string == 1 product ):

// сделал переменную всей строки.
  $parsed_string = $parse_cat . ',' .  $parse_sub_cat . ';' . $product_title . ';' . $product_desc . ';';
  // убрал переносы
        $sanitize_strings = array("\r", "\n", "&nbsp");
  $encode_strings = str_replace($sanitize_strings, "", $parsed_string);
//убрал хтмл теги и привел к необходимой кодировке.
  $win_encode_string = array(htmlspecialchars_decode (iconv( "UTF-8" , "WINDOWS-1251", $encode_strings)));
//открыл файл
$fileopen = fopen('parsed_data.csv', 'a');
//положил нашу строку, все данные которые вытянули и обработал
  fputcsv($fileopen, $win_encode_string);
//закрыл файл.
  fclose($fileopen);

As a result, if goods already exist, it appends everything to the last one.
If there are no products, records, it writes new lines, imports, only all in one column.
Here is the header of the table:

Категория;"Метки товара";"Артикул";"Наименование";"Подробное описание";"Краткое описание";"Цена";"Цена со скидкой";"Кол-во на складе";"Цвет";"Перекрестные товары";"Картинка";"ATTACHMENT";"ATTACHMENT";"Статус товара";virtual;downloadable;file_paths

Here's what the entry looks like after it's been added:

Категория_1, категория_2;название товара;описание товара;

Here, what could be the problem?
P.S. (Unfortunately, my excel is g *, 2007, pirated, yo-ho-ho, maybe this is a repack, I can’t edit it manually, the encodings are merged. )