At this point in your poker career, making money shouldn't be your primary goal (though it is a goal).

Primarily you should be:
- Focusing on staying out of hands that are likely to get you in trouble.
- Trying to look at every situation in terms of odds (it was a big step for me when I started doing that)
- Trying to consider the effects of position in every hand.
- And, trying to play "correctly" even though most players around aren't doing so.

2nl is easily the best place to learn those sorts of things because mistakes are less costly, and you WILL get paid most of the time you have a good hand.

You need to consider your time at these levels as basic lessons in poker, not a money-making venture. The money will come down the road.