In order to create a Multilingual Site, you have to use a translation plugin. Multilingual plugins offer WordPress users the ability to run a multilingual site with a single WP install. Elementor is tested and works with WPML and TranslatePress.
WPML plugin - check out these guides
How to translate Elementror using WPML
TranslatePress plugin - check out these guides:
How to Create a Multilingual Website With Elementor and TranslatePress