Override Custom pricing to WooCommerce Products

add_filter('woocommerce_get_price', 'change_displayed_sale_price_html', 10, 2);
function change_displayed_sale_price_html($price, $product) {
    if ($product->is_on_sale()) //Check product is on sale 
        $sale_price = (float) $product->get_price();
    else
        $sale_price = 0;
    
    $main_price = (float) $product->get_regular_price(); //Regular Main Price
    $regular_price = $main_price - $sale_price; //Discount Price
    
    /*
     * Your custom code goes here
     */
    return $regular_price;
}