This widget comes free with WPmozo Addons Lite. To use it, simply install and activate the free version of plugin.

https://wordpress.org/plugins/wpmozo-addons-lite-for-elementor

How to add widget on page

Once the WPMozo Addons plugin is activated, it adds several widgets to the Elementor builder. To insert the Lottie widget, follow these steps.

1. Create/edit a page/post that uses Elementor builder.
2. Create/edit container.
3. Search widget Lottie under WPMozo.