Paginated Category on Sage9

[Energizer7]

Hey.
I’ve been trying to figure it out on creating a custom category page with pagination. I’ve tried in so many ways but I cant get the pagination right. I got 404 error every time with my code. The code itself is from WordPress Codex.

  <?php 
  // the query to set the posts per page to 3
  $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
  $args = array('posts_per_page' => 1, 'paged' => $paged, 'cat' => '7' );
  query_posts($args); ?>
  <!-- the loop -->
  <?php if ( have_posts() ) : while (have_posts()) : the_post(); ?>
          @php
              the_title();
          @endphp
          <!-- the title, the content etc.. -->
  <?php endwhile; ?>
  <!-- pagination -->
  <?php next_posts_link(); ?>
  <?php previous_posts_link(); ?>
  @php
      get_the_posts_navigation();
  @endphp
  <?php else : ?>
  <!-- No posts found -->
  <?php endif; ?>

What i actually wanted to do is paged category with only one article on one page.
Thank u for any help.