There is a high chance that trading platforms aren't 100% fair when you are using them because they have to make money too, when you lose its a gain for them and when you win its a loss for them so why will they want you to always win?
Okay, wait, I thought the platform will always be the winner though. Since whether you win or lose, it's still a win-win condition for the platform because they always get the fees from your activities. Either you buy, sell, and withdrawal. So, your point is that a certain trading platform purposely make you lose the trades your're doing?
always remember that they will never work for free, they want money just as you want money too
If they really want your money, why bother taking fees? They could just take all of your assest and run with it.