Everything is future or deferred contracts because if you understand the difference between what is permissible and forbidden, it is considered forbidden by law?
The deferred contracts' loss is along with the loss of capital, meaning the asset, which is your currency, and the capital, which is the value of that currency when you start trading derivatives, you will lose first due to your lack of experience and you cannot predict the market, and a single candle dropping for a minute above your capital will cause you to lose.
As for the spot trading, it is permissible because it is like gold; when you buy a currency and let’s assume you temporarily lost,
its value will rise again in the future.
Thus, the asset is still present, and that is the difference between what is permissible and forbidden.