Before

{{!-- The main content area --}}
<main id="site-main" class="site-main outer">
    <div class="inner posts">

        <div class="post-feed">
            {{#foreach posts}}

            {{!-- The tag below includes the markup for each post - partials/post-card.hbs --}}
            {{> "post-card"}}

            {{/foreach}}
        </div>

    </div>
</main>

snippet: index.hbs

After

{{!-- The main content area --}}
<main id="site-main" class="site-main outer">
    <div class="inner posts">

        <div class="post-feed">
            {{#get "posts" filter="tag:-[journal]" include="tags,authors" page=pagination.page}}
            {{#foreach posts}}

            {{!-- The tag below includes the markup for each post - partials/post-card.hbs --}}
            {{> "post-card"}}

            {{/foreach}}
            {{/get}}
        </div>

    </div>
</main>

Snippet: index.hbs

Get posts, filter tag but exclude - group [] such as journal and include tags,authors, also to make pagination work: page=pagination.page