Next HU hand:

Why would you not bet the river with twopair against a loose opponent (which actually doesn't matter, I would have bet against anybody here who checks 3 streets)???

Same table:
He openraises, you call 76o.
Flop 927 no suited.
You donkbet potsize.

What do you want to accomplish with that donk? why are you turning your fairly good hand into a bluff? He seemed quite aggressive, why not just let him cbet?

same table:
You bluff3bet JTo. Why turning a hand into a bluff that is nice for calling but really sucks when he calls the 3bet or shoves? Bluff3bet with hands who make more nutish hands or more draws on the flop when called and are not that easily dominated when called.

Same table:

Why are you turning your decent showdown value hand into a bluff? You can bluff with missed draws, etc in that situation. But why with a hand that has showndown value? Just check it behind.