Query posts by ACF Repeater field, change repeaterName for your repeater name

query-acf-field.php

/**
 * Allow hooking into ACF repeated fields with meta queries
 */
function repeaterAdapter( $where ) {

	$where = str_replace("meta_key = 'repeaterName_$", "meta_key LIKE 'repeaterName_%", $where);

	return $where;
}

add_filter('posts_where', 'repeaterAdapter');
$os = new WP_Query( [
  'post_type' => 'os',
  'post_status' => 'publish',
  'posts_per_page' => 5,
  'paged' => $paged,
  'meta_query'	=> array(
  'relation'		=> 'LIKE',
    array(
      'key'		=> 'repeaterName_$_field',
      'compare'	=> '=',
      'value'		=> 22,
    )),
]);