2NL/4NL Unknowns, donk bets, levelling and hi-jacking.
This is probably the biggest leak in my game.
It's hard to determine what a villain has from the way he bets unless you have a few hundred hands of history with him. While I have this with some villains and have been exploiting them accordingly, the problem is still how to approach unknowns, because they do weird things that don't make sense, and it's impossible to get a read.
A typical bad situation for me, is leading a pot from LP with a decent hand (KQo+, TT+), getting flatted by one of the blinds, and then they immediately donk 1/2 pot on the flop on a ridiculously dry board, OR, one where I've made top pair with top or second kicker.
This annoys the crap out of me.
I don't like flat calling, because then they will donk the turn and the river and basically control the pot, and you effectively have no idea what they're betting with (it'll be air or a low-middle pair just as often as it is trips or 2-pair).
I also don't like re-raising, because then you can into a betting war and you really have no idea where you're at, because lot of the time aggression is not respected at these stakes.
It leaves me very frustrated and if it happens often enough I will go on tilt.
Another situation I don't like is when I raise from MP, get called, hit my TP on the flop, raise, get called, then check the turn (for pot control). Then someone puts out a pot-sized bet even when the turn is a blank. If it's a bluff, it makes no sense, if it's not a bluff, it still makes no sense (why wouldn't you re-raise the flop?). I have no idea if someone's making a really clever move or a really dumb one. And the worst thing about unknowns in Microstakes is that it's really hard to give people credit for monster hands or even that they know what they're doing.
As a sane player, I rarely want to play a big pot with just top pair, so it really puts me in a difficult spot when people who likely have at best the same hand as me want to keep building it.