add_action('init', function() {
    if (!isset($_GET['delete_posts'])) return;

    global $wpdb;

    $batch = 5000;

    $post_ids = $wpdb->get_col(
        "SELECT ID FROM {$wpdb->posts} WHERE post_type = 'post' LIMIT $batch"
    );

    if (empty($post_ids)) {
        echo "Done.";
        exit;
    }

    $ids_str = implode(',', array_map('intval', $post_ids));

    $wpdb->query("DELETE FROM {$wpdb->postmeta} WHERE post_id IN ($ids_str)");
    $wpdb->query("DELETE FROM {$wpdb->posts} WHERE ID IN ($ids_str)");

    echo count($post_ids) . " posts deleted.";
    exit;
});
<br />
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North East Africa: Desert Dusk (4)\" srcset=\"https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Axis-Campaign-05.-North-East-Africa-Desert-Dusk-4-512x288.jpg 512w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Axis-Campaign-05.-North-East-Africa-Desert-Dusk-4-800x450.jpg 800w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Axis-Campaign-05.-North-East-Africa-Desert-Dusk-4-200x113.jpg 200w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Axis-Campaign-05.-North-East-Africa-Desert-Dusk-4-768x432.jpg 768w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Axis-Campaign-05.-North-East-Africa-Desert-Dusk-4-16x9.jpg 16w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Axis-Campaign-05.-North-East-Africa-Desert-Dusk-4.jpg 1280w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/a><\/p>\n<p>Wave 30 turret placement.<\/p>\n"},"caption":{"rendered":"<p>Wave 30 turret placement.<\/p>\n"},"alt_text":"\"iBomber Defense\" - Axis Campaign - 05. 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