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 8,191 websites that are Child Pages Shortcode Customers. We know of 4,427 live websites using Child Pages Shortcode and an additional 3,764 sites that used Child Pages Shortcode historically and 1,720 websites in the United States.
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Get a list of 8,191 websites using Child Pages Shortcode which includes location information, hosting data, contact details, 4,427 currently live websites and an additional 1,374 domains that redirect to sites in this list. 3,764 sites that used this technology previouslyand 1,720 websites in the United States currently using Child Pages Shortcode.
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