Found the problem, when I move DESCRIPTION TAB priority after brand_tab, it works,

// Reorder Tabs on WooCommerce Product Page -----------------------------------
function bashi_reorder_tabs_product_page( $tabs ) {
	$tabs['description']['priority'] = 30;
    $tabs['brand_tab']['priority'] = 10;
    $tabs['reviews']['priority'] = 15;
    $tabs['woodmart_additional_tab']['priority'] = 20;
    return $tabs;
}
add_filter( 'woocommerce_product_tabs', 'bashi_reorder_tabs_product_page', 98 );

but in theory, I want to keep description tab 1-st when it will have content to show and when not, not to show and 2nd BRAND tab to be opened automatically