Why do many traders lose tens of dollars or even thousands of dollars?

Take a look at the picture! This is just a small example

BALANCE BEFORE TRADING $ 184

Profit from SHORT BANANAS3 = $ 67.99

Loss from Long BANANAS3 = $ 43.29

What should the balance be?

184+67.99-43.29=209.7, right?

But do you know what my balance is after closing those 2 games?

MY BALANCE 178 dollars

Strange, right?

It is very illogical if the funding costs up to $ 30 only in 2 games in one day.

However, strangely, I checked the fee history and it was not written.

Be careful when facing scams like this.