You don’t have to edit the products from Elementor. Products can be added/edited from the Products menu in your dashboard. Once you have all the products, you can use the shortcodes to show the products on the page using the Elementor Page Builder.
Where to find Shortcodes?
— Check Krystal documentation. You will find a topic WooCommerce Shortcodes. It has all the shortcodes that can be used.
How to use Shortcodes in Elementor?
— There are two options for this.
1) You can use the Text Editor Widget and paste the shortcodes
2) You can use the Shortcode Widget to add the shortcode.
For Product Categories
— There is a widget Krystal Shop: WooCommerce Categories Section for this. Find it inside the WORDPRESS sliding tab in the Elementor Left panel