Pagination for custom loop on custom page template is not displaying anything

Harman, don’t use get_posts() when pagination is required. You may also accomplish this task using WP_Query.

Refer to this answer explained beautifully by Chip Bennett at

How to fix pagination for custom loops?

    <?php $user_fav = get_user_favorites($user_id); 
      $paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;
       $args = array(
        'posts_per_page'   => 4,
        'post_type'        => array('communityposts','post','video'),
        'post__in'         => $user_fav,
        'post_status'      => 'publish',
        'suppress_filters' => true ,
        'paged'            => $paged
      );
      $loop = new WP_Query( $args );
      $temp_query = $wp_query;
      $wp_query   = NULL;
      $wp_query   = $loop;
      if( $loop->have_posts()):while($loop->have_posts()):$loop->the_post(); 
    ?>

<article class="post-items-latest">
  <a href="https://wordpress.stackexchange.com/questions/194840/<?php echo get_permalink( $post->ID ); ?>" title="<?php the_title(); ?>">
    <span class="image-wrapper">

      <?php
        $thumb = get_post_thumbnail_id($post->ID);
        $img_url = wp_get_attachment_url( $thumb,'full' ); //get full URL to image (use "large" or "medium" if the images too big)
       ?>
        <img src="<?php echo $img_url; ?>" alt="<?php the_title(); ?>" width="226" height="117">

    </span>
    <h1><?php the_title(); ?></h1>
  </a>
  <div class="post-footer">
    <span class="user"><i class="fa fa-user"></i>&nbsp;<?php echo get_the_author_link(); ?></span>
    <span class="data"><i class="fa fa-clock-o"></i>&nbsp;<?php wp_days_ago_v3(); ?></span>
    <span class="likes"><i class="fa fa-eye"></i>&nbsp;<?php echo $meta_values = get_post_meta( get_the_ID(), 'cv_post_views_count', true ); ?> </span>
  </div>
</article>

<?php 
endwhile;
endif;
wp_reset_postdata();
?>

<div class="post-nav-container">
  <?php previous_posts_link( __('&rarr; Older Posts')); ?>
  <?php next_posts_link( __('Newer Posts &larr; ',$loop->max_num_pages)); ?>
</div>

<?php 
$wp_query = NULL;
$wp_query = $temp_query;
?>