Remove excerpt from home

open your content.php and add is home check before excerpt

if( ! is_home()) the_excerpt();

Make sure you are using a child theme to modify any theme files – otherwise all the changes will be lost when the theme is updated.

Child theme?

<?php if ( ! is_home() ) the_excerpt(); ?>

does not work this

https://codex.www.ads-software.com/Child_Themes#How_to_Create_a_Child_Theme

Are you using a “front page” for home or the default home ? if so you should use if( !is_front_page())