For loop optimization(Variable used in lambda expression should be final or effectively final)

    boolean flag = true;
    BigDecimal price = BigDecimal.valueOf(15);
    // product.price
    // 5             -> OK, price = 15- 5 =10
    // 4             -> OK, price = 10 - 4 = 6
    // 7             -> FAIL, balance = 7 - price = 7-6=1 => balance=1
    // 10            skip
    // 12            skip

    for (ProductEntity el : products) {
        if (flag) {
            if (el.getPrice().compareTo(price) <= 0) {
                el.setAvailability("OK");
                price = price.subtract(el.getPrice());
            } else {
                el.setStatus("FAIL");
                el.setBalance(price);
                flag = false;
            }
            productRepository.save(el);
        }
    }

Want to improve this code piece, for loop is iterating over all products, I want to skip after FAIL case. Tried to do it with foreach, but there I'm having error: Variable used in lambda expression should be final or effectively final. Any suggestions?