Different styles on multiple pages

You can use elseif to check another page template and you can go on like this.

if ( is_page_template('page-templates/page-1.php') ) {

    wp_enqueue_style( 'sentiencesentient-layout-style' ,    get_template_directory_uri() . '/layouts/style1.css');

} elseif ( is_page_template('page-templates/page-2.php') ) {

    wp_enqueue_style( 'sentiencesentient-layout-style' ,    get_template_directory_uri() . '/layouts/style2.css');

} elseif ( is_page_template('page-templates/page-3.php') ) {

    wp_enqueue_style( 'sentiencesentient-layout-style' ,    get_template_directory_uri() . '/layouts/style3.css');

} elseif ( is_page_template('page-templates/page-4.php') ) {

    wp_enqueue_style( 'sentiencesentient-layout-style' ,    get_template_directory_uri() . '/layouts/style4.css');

} else {

    wp_enqueue_style( 'sentiencesentient-layout-style' ,    get_template_directory_uri() . '/layouts/style5.css');
}

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