Issues with post page. Footer disappears ; No pagination for old/new post

The site has WordPress 5.0.3 and theme is simple-bootstrap .

This is my present post page . (https://mtest.121tarotreadings.com/news/).

As you can see this page is not properly formatted. I have template for blog page. But When I go to edit I cannot see any option to choose the template in the attribute section. Please click here to see screenshot

So I have created another page for displaying all the posts . Link where I can choose the template for this page.
For better understanding. : Click here to see the screenshot

But in (i.e : This page ) the footer disappears even though I have set footer in the Template file. Also this page is only showing few latest post. There is no pagination so that one can to go to previous / next post pages.

But its not the case with my present post page . There are pagination and the footer also exists.

This is settings for reading (Screenshot ) . if i set the new page (i.e : Blog-2 ) as post page in here the format of this page also changed . it looks exactly like the poorly formatted news page. and also I cannot find the option for choosing template in Edit section.

This is my template for blog (Screenshot )

this is the settings in appearance -> customise ( Screenshot)

I am confused what is wrong with the settings. What should i do to bring back footer and pagination in blog page and how can i get the option for choosing template in news page.

Below is the code for blog template.

TIA

<?php
  /*     Template Name: blog  */
  get_header();

   // Set up the paged variable
   $temp = $wp_query;
   $wp_query= null;
   $wp_query = new WP_Query();
   $wp_query->query('showposts=8'.'&paged='.$paged);

    ?>

     <section id="page-blog" class="container">
       <?php the_content();?>
       <div class="row">
        <?php while ($wp_query->have_posts()) : $wp_query->the_post();  ?>
        <div class="col-sm-4 col-md-3 block-news">
            <?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?>
                <div id="post-<?php echo $post->ID; ?>" <?php post_class(); ?>>
                <div class="image-news-home" style="background-image:url(<?php echo $image[0];?>);"></div>
                <h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
                <div class="post-excerpt">
                    <?php the_excerpt(); ?>
                    <a class="more-link" href="<?php the_permalink(); ?>">Read the full story <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span></a>
                </div>
              </div>
           </div>
          <?php endwhile; ?>
       </div>
       <?php
         if ( function_exists('wp_bootstrap_pagination') )
           wp_bootstrap_pagination();
        ?>
       </section>

      <? wp_reset_query();
         get_footer();  ?> 

The page I need help with: [log in to see the link]