I wouldn't recommend you to gamble for profit as you will always end up losing.
Gambling should be a fun hobby that you do for excitement,not a thing that you do to earn money.
If you keep gambling for excitement and not for profit, you won't find yourself at a situation that you lost more money then you planned.
That is just a the same thing there are people who are gambling for entertainment who are also losing a lot since they are having fun. They really don't care at all no matter how much they lose because the important thing to them is that they are enjoying the money that they are worked hard. So whether we gamble for fun or profit, just gamble what we afford to lose.