Get Post Ids of Liked from user which is not saved in user meta and cannot be get by get_user_meta() function Works with plugin (WP ULike) https://wordpress.org/plugins/wp-ulike/

get_ulike_posts.php

<?php
//Works only with wordpress plugin (WP ULike) url: https://wordpress.org/plugins/wp-ulike/
function prefix_get_posts_liked_by_current_user( $user_id = '' ) {
	if ( function_exists( 'wp_ulike' ) ) {
		global $wpdb;
		$result = array();
		if ( ! $user_id ) {
			$user_ID = get_current_user_id();
		}
		$likes = $wpdb->get_results( "
							SELECT U.post_id
							FROM " . $wpdb->prefix . "ulike AS U
							WHERE  U.user_id = $user_ID AND U.status = 'like'
							GROUP BY U.post_id
							ORDER BY MAX(U.date_time) DESC
						" );
		if ( $likes !== 0 ) {
			foreach ( $likes as $like ) {
				$result[] = $like->post_id;
			}
		}

		return $result;
	} else {
		return false;
	}
}



//simple use:
$arguments = array(
	'post__in' => prefix_get_posts_liked_by_current_user(get_current_user_id())
);
$user_query = new WP_Query($arguments);