Haha ouch. The flop call is terrible, obviously. What you're doing here at the flop is floating, and at 2nl it's just a waste of time. Floating is calling a bet with nothing with the intention of bluffing a later street, but at 2nl, people are much less likely to fold top pair to a raise at a later street, therefore floating is not profitable when you're playing against bad players.

You're much better off punishing those who can't fold top pair, you really don't need to bluff at 2nl.