It is also certain that those who are professionals in trading will experience losses, because there are two possibilities that result from trading, namely profit and loss.
I've also seen on various Telegram channels that Future trading likes to mention that it can get up to hundreds of millions of USD in liquid.
The hundreds of millions of USD that were liquidated were a combination of all the traders, now this is proof that professional traders like them also experienced losses.
Unfortunately, I forgot which Telegram channel provides information about Liquid from future trading, maybe later if I find it I will add the information to this thread.