Pagination in custom post type page template

I made a query for my custom post type "websites". I'm trying to get the pagination working but I'm running in some errors. I think the whole code is ok, only the part just before the end while tags. I just don't know how to get this right. Any help would be enormously appreciated!

?php

        // WP_Query arguments
        $args = array (
            'post_type'              = 'website',
            'post_status'            = 'publish',
            'pagination'             = true,
            'posts_per_page'         = '5',
            'posts_per_archive_page' = '5',
            'ignore_sticky_posts'    = false,
            'order'                  = 'DESC',
        );


        // Get current page and append to custom query parameters array
        $mfs_query['paged'] = get_query_var( 'paged' ) ? get_query_var( 'paged' ) : 1;

        // The Query
        $mfs_query = new WP_Query( $args );

        // Pagination fix
        $temp_query = $wp_query;
        $wp_query   = NULL;
        $wp_query   = $mfs_query;

        // The Loop
        if ( $mfs_query-have_posts() ) {
            while ( $mfs_query-have_posts() ) {
                $mfs_query-the_post();
                // do something

                ? div class="submission"

                    a class="submission-thumb" href="?php echo get_permalink(get_the_ID()); ?"
                        ?php echo the_post_thumbnail(); ?
                    /a

                    a class="submission-title" href="?php echo get_permalink(get_the_ID()); ?"
                        h3?php the_title(); ?/h3 span class="posted-ago"?php echo human_time_diff( get_the_time('U'), current_time('timestamp') ) . ' ago'; ?/span
                    /a

                    a class="submission-link" href="?php the_field('site_url'); ?" target="_blank"Visit/a

                /div

                ?php } ?  
                ?php endwhile; else : ? 

            ?php wp_reset_postdata(); ?

            p?php _e( 'Sorry, no posts matched your criteria.' ); ?/p

            ?php // Custom query loop pagination
            previous_posts_link( 'Older Posts' );
            next_posts_link( 'Newer Posts', $mfs_query-max_num_pages ); ?


            ?php $wp_query = null; $wp_query = $temp_query;?

            ?