Elementor is downloaded from wp.org in the installation process. In case your server fails to connect with WP.org it shows a failed message for Elementor.
Here’s how you can solve this.
a. open a new browser tab
b. login to your site in WP admin panel
c. go to plugins – add new
d. search and install elementor
e. Refresh the setup wizard it will show elementor installed and you can proceed to next steps.