There are ways that a dishonest broker can skim profits off of your trade. One of those ways is by taking advantage of what can be up to a 2 minute gap between the time that you place your order and the time that you see the results on your platform. Second- the broker controls the price you see on your trading platform and there’s a custom made opportunity to shave profit from the transaction if the price moved before the transaction was posted back to your screen.
If you are looking to make fast money with small risk you need to look into Forex Scalping.
Forex Scalping is entering and exiting a position very fast! you will be able to make 20 pips a day and maybe more.