acf_funcs.php

<?php
function render_acf_content( $field_name = 'page_layout', $post_id = null ) {
	if ( ! $post_id ) {
		$post_id = get_the_ID();
		if ( is_home() ) {
			$post_id = get_option( 'page_for_posts' );
		}
	}

	$render_block = function () {
		$row_layout = get_row_layout();

		$templates = array(
			apply_filters( 'template_include', "content_blocks/block-{$row_layout}.php" ),
			apply_filters( 'template_include', 'content_blocks/block.php' ),
		);

		$located = locate_template( $templates, false, false );
		if ( (string) $located !== '' ) {
			include $located;
		} elseif ( WP_DEBUG ) {
			echo '<strong>' . $row_layout . '</strong>';
		}
	};

	if ( have_rows( $field_name, $post_id ) ) {
		$row_index = 0;
		while ( have_rows( $field_name, $post_id ) ) {
			the_row();
			$render_block();
			$row_index ++;
		}
	}
}

single.php

<?php

get_header();

while ( have_posts() ) : 
    the_post(); ?>
    
    <div id="mainWrap">
        <?php render_acf_content(); ?>
    </div>
    
<?php
get_footer();