Thanks @loid45
i tried that before. I add below code and it carries url in href like (http://localhost/Q-PASS-WEB/blog?paged=2) format in prev and next. But when i click that, it still display (http://localhost/Q-PASS-WEB/blog/page/2) in url of browser
$total_pages = $custom_query->max_num_pages;
$current_page = max(1, get_query_var('paged'));
$pagination_base = get_pagenum_link(1);
$format = '?paged=%#%';
paginate_links(array(
'base' => $pagination_base . '%_%',
'format' => $format,
'current' => $current_page,
'total' => $total_pages,
'prev_text' => '<img src="' . img_path('common/p_arrow_l.svg') . '" alt="Previous">',
'next_text' => '<img src="' . img_path('common/p_arrow_r.svg') . '" alt="Next">',
));