Forex Trading or (foreign exchange trading) is not the same as it look like. Maybe it look like a business in which any investor may see million dollars. Yet imagine if you are an investor and you got the news that $USD is weak due to some reason and now you have the opportunity to buy any other currency or commodity against USD. You would surely buy that one which you know is stronger or maybe you would like to hedge. when you would buy that currency or commodity against USD you may want to buy it with some big lot because broker is offering you high leverage( Leverage is the ability to buy something in trading world with a much bigger lot that is impossible if you don't have it). So you could be greedy and we all could be at such a time on getting that opportunity. Broker is not getting any kind of loss if loss happens in your account.
Always this question arises that why broker is offering you that much leverage. Then broker motivates investor to invest and not to be frightened with small losses. Investors sticks to that platform in the hope that one day he would surely earn something. This looks similar to casino. where casino staff invites investor to try one's luck and when investor loses they motivates by saying better luck next time. Try to understand that they are making fool whether they are casino owners or they are brokers. Brokers earn from spread (spread is like a tax which is being cut from traders profit) when we place a bet and get profit on it. If we loses they got nothing and also loses nothing but we loses. Yet they want us to trade because they want to get more from our investment. They give us leverage so that we would place bigger lots and thus they got big profit from cutting on spread. They don't care if we loses because they got their share. Yet now if we have a loss then don't worry they want us to try luck again.
About market controllers whether they are banks or anyone else. They do whatever is the orders they got or is good for economy and no one can guess it correctly. Price could be up and then "no" "Oh shit" price is down OR the opposite. Are we fools or we have black money to invest. I have even heard some motivators saying that investor should invest that amount of money about which he don't care. Ask to yourself Is any amount of money is useless for you. Why don't they invest a big amount in it rather than motivating us. Broker says we have also invested in it but still brokers are not in loss because no one is offering them leverage and thus they are risking very little or nothing. They Only invest to motivate investors and they even make websites to provide any risky data for more wrong guidance. Nothing works and at last old investor runs away and new chicken comes in trading cage.
There are thousand reasons why you should not trade in forex or stop trading if you are doing it right now and only one reason to trade and that is for proving me wrong. If you have extra money than throw it in some well or burn it but don't invest it in forex. Don't play with your time and money invest it on some other business in which you think risk is acceptable.