How to make custom fields in Gutenberg editor? Need Help

Here is the code I copied from the Youtuber to make the description gutenberged:

// enable gutenberg for woocommerce

function activate_gutenberg_product( $can_edit, $post_type ) {

if ( $post_type == ‘product’ ) {

$can_edit = true;

}

return $can_edit;

}

add_filter( ‘use_block_editor_for_post_type’, ‘activate_gutenberg_product’, 10, 2 );

// enable taxonomy fields for woocommerce with gutenberg on

function enable_taxonomy_rest( $args ) {

$args[‘show_in_rest’] = true;

return $args;

}

add_filter( ‘woocommerce_taxonomy_args_product_cat’, ‘enable_taxonomy_rest’ );

add_filter( ‘woocommerce_taxonomy_args_product_tag’, ‘enable_taxonomy_rest’ );

ACF is the best option should you wish to avoid react and diving way deep into code.