How much profit can 200$ make as i dont want to throw a lot.
You are almost 100% guaranteed to lose your $200. It's not near enough money.
I used to trade commodities. My friends shifted to Forex, and have been involved in that for several years.
One of the things that will happen is that your demo account will not work like a real account. The major difference will be that you can't get in and out of a trade exactly where you wish, even though they tell you your account is real time.
Another thing you should be aware of is that you will need several good trades to make up for just ONE bad trade. You can have half a dozen good trades that build up your account, when suddenly you get one bad trade that wipes out your account. That's a hard concept to get your head around until it happens to you, but it's the reality of trading.
With all of that said, I will tell you that I did, and still could, make money trading. It was never a case of not being able to predict which way the market was going to move. It was a case of timing. You can see what is going to happen easily enough. But, when to enter the trade is another thing altogether. If you get in too early and the market doesn't go your way for a few days, it can devastate your trading account, unless you have a lot of money in it.
One of the primary things I came to hate about trading was the tremendous emotional ups and downs. When you're winning, it's great. But, I got tired of being sick at heart when I was losing.
The most valuable advice I ever received was from a broker who told me to decide how much money I wanted to make "today". He told me to get out of the market just as soon as I had made it. I didn't really want to be a day trader, but from my own experience and watching the market, his advice would have worked best.
Whatever you decide, good luck. I wish you well.