Can I add more columns? only in specific collections pages?

[namet]

Can I add more columns? only in specific collections pages?
Each collection may contain duplicate products but some collections pages use different amounts of products or anyone knows how to transform the Google Sheet tab to collections Thank you.

 I want to add QTY. tab and REMARKS tab to each collections

 Here's my current custom liquid code.

<center>
<table>
  <tr>
    <th>No.</th>
    <th>Product SKU</th>
    <th>Product Name</th>
    <th>Price</th>
  </tr>
  {% for product in collection.products %}
  <tr>
    <td>{{ forloop.index }}</td>
    <td><a style="text-decoration: none;color: black;" href="{{ product.url }}">{{ product.sku }}{{ product.selected_or_first_available_variant.sku }}</a></td>
   <td><a style="text-decoration: none;color: black;" href="{{ product.url }}">{{ product.title }}</a></td>
    <td>{{ product.price }}</td>
  </tr>
  {% endfor %}
</table>
</center>

[namet]

<center>
<table>
  <tr>
    <th>No.</th>
    <th>Product SKU</th>
    <th>Product Name</th>
    <th>Price</th>
    <th>QTY.</th>
  </tr>
  {% for product in collection.products %}
  <tr>
    <td>{{ forloop.index }}</td>
    <td><a style="text-decoration: none;color: black;" href="{{ product.url }}">{{ product.sku }}{{ product.selected_or_first_available_variant.sku }}</a></td>
   <td><a style="text-decoration: none;color: black;" href="{{ product.url }}">{{ product.title }}</a></td>
    <td>{{ product.price }}</td>
    <td></td>
  </tr>
  {% endfor %}
</table>
</center>

How to add the last column of manual on each unique collection?