remove woocommerce tabs and add them into separate individual sections

functions.php

<?php
// Asuming you have a default setup

// we remove the default tabs 
remove_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_product_data_tabs', 10 );

// alternative (depending on setup): 
// add_filter( 'woocommerce_product_tabs', 'my_remove_all_product_tabs', 98 );
 
// function my_remove_all_product_tabs( $tabs ) {
//   unset( $tabs['description'] );        // Remove the description tab
//   unset( $tabs['reviews'] );       // Remove the reviews tab
//   unset( $tabs['additional_information'] );    // Remove the additional information tab
//   return $tabs;
// }

// populate sections
// Description
add_action( 'woocommerce_single_product_summary', 'custom_product_description_section', 20 );
function custom_product_description_section() {
    echo '<div class="product-description-section">';
    the_content();
    echo '</div>';
}

// Additional informations
add_action( 'woocommerce_single_product_summary', 'custom_additional_info_section', 25 );
function custom_additional_info_section() {
    echo '<div class="additional-info-section">';
    woocommerce_output_product_additional_information();
    echo '</div>';
}

// Reviews
add_action( 'woocommerce_single_product_summary', 'custom_reviews_section', 30 );
function custom_reviews_section() {
    echo '<div class="reviews-section">';
    comments_template();
    echo '</div>';
}

for more details on removing some tabs (keeping some of them in tabs) using the alternative method, you got here a full article on this