You can use shortcode for display child pages from the page.
https://wordpress.org/plugins/child-pages-shortcode
Widgets · WordPress Plugins
Get access to data on 7,393 websites Child Pages Shortcode Customers. We know of 5,509 live websites using Child Pages Shortcode and an additional 1,884 sites that used Child Pages Shortcode historically and 2,136 websites in the United States.
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Get a list of 7,393 websites using Child Pages Shortcode which includes location information, hosting data, contact details, 5,509 currently live websites and an additional 1,705 domains that redirect to sites in this list. 1,884 sites that used this technology previouslyand 2,136 websites in the United States currently using Child Pages Shortcode.
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