Can we get user profile page using user_id in the URL?
You can use the get_the_author_meta() function for this purpose. Use the get_the_author_meta(‘ID’) for only get the ID. Ensure you check the page first with is_author() function before getting the ID. https://developer.wordpress.org/reference/functions/get_the_author_meta/ https://developer.wordpress.org/reference/functions/is_author/