Create New article template, But when i write a new article, it edit my previous article as well

Hi, Recently i create a new template for my blog article, which i can add section into

Its works fine if there is only one article in the blog, but when i write another new article. i use the same template and when I customise the new article, and it shown the words and photos of the previous article, if i delete or edit those section in the new article, the previous one will be edit or delete as well. Do I need to create new template every times if i want to use section for my new article?

for the article-alternate-template.liquid code are kinda like this

{% if section.blocks.size > 0 %}
{% for block in section.blocks %}

{% if block.type == ‘image_with_text_overlay’ %}

{% include ‘include-image-with-text-overlay’, type: ‘block’ %}

{% elsif block.type == ‘map’ %}

{% include ‘include-map’, type: ‘block’ %}

{% elsif block.type == ‘rich_text_and_image’ %}

{% include ‘include-featured-text’, type: ‘block’ %}

{% elsif block.type == ‘featured_promotion’ %}

{% include ‘include-featured-promotion’, type: ‘block’ %}

{% elsif block.type == ‘featured_product’ %}

{% include ‘include-featured-product’, type: ‘block’ %}

{% elsif block.type == ‘featured_collection’ %}

{% include ‘include-featured-collection’, type: ‘block’ %}

Did i used an incorrect method or a stupid way to create new theme for articles :joy: ? Is there any way to create template that can allow using section to upload words and photos/ video into article without Creating new theme every time :sob: Many Thankssss!