If you need a WordPress Filter Plugin, then Live Search and Custom Fields is a perfect choice that provides powerful live search and WooCommerce Product Filter functionality. It allows your users to filter and search the posts or your shop products according to their needs. Built with modern technologies(AngularJS), you will find it highly customizable with many modern features.

Demo: https://codecanyon.net/item/live-search-and-custom-fields/18598007