Why isn't my brand name appearing in website page titles?

Store Design
1

My brand name is not showing up on any Page Titles throughout the website. It has “Brand - Page Title” in the SEO, it only shows the Page Title so I’m sure in my code I have it overriding and deleting the brand name I assume.

Code below is what’s in my theme.liquid file. I’m hoping someone can assist on what part to delete to stop the overriding of the brand name to happen throughout all the page titles.

{% capture seo_title %}
    {%- assign title_content = page_title -%}
    {% if title_override %}
      {%- assign title_content = title_override -%}
    {% endif %}
    {{ title_content }}
    {%- if current_tags -%}
      {%- assign meta_tags = current_tags | join: ', ' -%} – {{ 'general.meta.tags' | t: tags: meta_tags }}
    {%- endif -%}
    {%- if current_page != 1 -%}
      – {{ 'general.meta.page' | t: page: current_page }}
    {%- endif -%}
    {%- assign title_downcase = title_content | downcase -%}
    {%- assign name_downcase = shop.name | downcase -%}
    {%- unless title_downcase contains name_downcase -%}
      – {{ shop.name }}
    {%- endunless -%}
  {% endcapture %}