Reference: https://eventespresso.com/topic/espresso_events_table_template-show-only-expired/

show_only_expired_events.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

function custom_posts_where_sql_for_only_expired() {
  return ' AND ' . EEM_Datetime::instance()->table() . '.DTT_EVT_end < "' . current_time( 'mysql', TRUE ) . '" 
   AND post_status = "publish"';
}

add_action( 'loop_start', 'my_custom_event_view_only_expired' );

function my_custom_event_view_only_expired() {
  if ( is_page( 'past-events-page' ) ) { // swap in the page slug here for to match the page where you display the list
      add_filter( 'posts_where', 'custom_posts_where_sql_for_only_expired' );
  }
}