Im going to go slightly mad here, and your going to hate me....
Right, you have K4. Off suit. In a HU game, this is a standard fold. One high card, one low. Off suit. No possible nut hands your drawing to. No possible anything. If a king comes... are you ahead? Noone knows.
Now post flop... Calling $2 on the turn with a gutshot is NOT a good play. There is $2 int he pot. Your getting 2-1. The odds of you hitting are 7.5-1(ish). Which is in no way good math. Even if you factor in the overcards, which you cant, as you have no idea if its a safe out for you, or even if the 6 is a safe out, your at like 6-1 odds.
Now the turn. I dont hate the play here, but id never have gotten this far. You are bluffing with only 4 outs in the DECK that can give you anything near the nut hand. If you get called, this is 92% of the time a complete waste of money.
The river comes, you hit your hand. Miracle time. Hallejulah.So what do you do. Do you trap check? No. Do you induce a bluff with a small bet? No. Do you value bet? No. Do you push all in and ONLY get called by a split pot/better hand? YES.
What the hell is this river move accomplishing. You cant even argue its an overbet to look like a bluff. As he isnt calling with a pair or 2 pairs here. Not ever. He MIGHT call you with a set, if he is bad or has a read on you for having **** all.
I dont get how you can be winning money at HU games with these Level 1 plays. Your not thinking what they might have. Your not thinking what they think you have.
Iny my opinion you should stop playing HU cash poker right now