Q: Not all posts are showing on Template page in wordpress I made a custom template and I want to show all posts from certain category in this template excluding some ,I am only getting 10 posts but I have more than 100 posts and pagination shows repeated posts ,I mean same posts on other pages ,is there anything wrong in this code
any help would be highly appreciated 
`
<?php /* Template Name: Blog Template */ ?>
<?php get_header(); ?>

<?php 
$homepageLayout = get_theme_mod('homepageLayout', 'no-sidebar');

?>

<div class="container pm-containerPadding-top-110 pm-containerPadding-bottom-90">
    <div class="row">

        <?php if($homepageLayout === 'no-sidebar') { ?>

            <div class="col-lg-12 col-md-12 col-sm-12">




                <?php
$query = new WP_Query('cat=106,93,138,136,86,23,103,83,84,92,78,137');


 if ($query->have_posts()) : while ($query->have_posts()) : $query->the_post(); ?>

                    <?php get_template_part( 'content', 'post' ); ?>

                <?php }//end of posts ?>

                <?php } else { ?>
                     <p><?php _e('No posts were found.', 'medicallinktheme'); ?></p>
                <?php endif; ?> 

                <?php get_template_part( 'content', 'pagination' ); ?>

            </div>

        <?php } else if($homepageLayout === 'right-sidebar') {?>

            <!-- Retrive right sidebar post template -->
            <div class="col-lg-8 col-md-8 col-sm-12">

                <?php
$query = new WP_Query('cat=106,93,138,136,86,23,103,83,84,92,78,137');



 if ($query->have_posts()) : while ($query->have_posts()) : $query->the_post(); ?>

                    <?php get_template_part( 'content', 'post' ); ?>

                <?php }//end of posts ?>

                <?php } else { ?>
                     <p><?php _e('No posts were found.', 'medicallinktheme'); ?></p>
                <?php endif; ?>  

                <?php get_template_part( 'content', 'pagination' ); ?>

            </div>

             <!-- Right Sidebar -->
             <?php get_sidebar('home'); ?>
             <!-- /Right Sidebar -->

        <?php } else if($homepageLayout === 'left-sidebar') { ?>

             <!-- Left Sidebar -->
             <?php get_sidebar('home'); ?>
             <!-- /Left Sidebar -->

            <!-- Retrive right sidebar post template -->
            <div class="col-lg-8 col-md-8 col-sm-12">

                <?php
$query = new WP_Query('cat=106,93,138,136,86,23,103,83,84,92,78,137');



 if ($query->have_posts()) : while ($query->have_posts()) : $query->the_post(); ?>

                    <?php get_template_part( 'content', 'post' ); ?>

                <?php }//end of posts ?>

                <?php } else { ?>
                     <p><?php _e('No posts were found.', 'medicallinktheme'); ?></p>
                <?php endif; ?> 

                <?php get_template_part( 'content', 'pagination' ); ?>

            </div>

        <?php } else {//default full width layout ?>

            <div class="col-lg-12 col-md-12 col-sm-12">

<?php

$query = new WP_Query('cat=106,93,138,136,86,23,103,83,84,92,78,137');



 if ($query->have_posts()) : while ($query->have_posts()) : $query->the_post(); ?>

                    <?php get_template_part( 'content', 'post' ); ?>

                <?php }//end of posts ?>

                <?php } else { ?>
                     <p><?php _e('No posts were found.', 'medicallinktheme'); ?></p>
                <?php } ?> 

                <?php get_template_part( 'content', 'pagination' ); ?>

            </div>

        <?php }  ?>

    </div> <!-- /row -->
</div> <!-- /container -->
<?php get_footer(); ?>

` 

A: Go to Wordpress Admin Dashboard
There is in Setting > Reading
A Option Available "Blog pages show at most" that is default 10 change it and you can get all your posts
