Hand 1: Raise the turn, instacall river. You can't honestly consider folding here, especially since you look so weak by just calling the turn. He could easily have KT/KJ, flush draw, etc.

Hand 2: Easy river fold, especially vs a nit. We only beat AK here. We also beat JJ but JJ doesn't shove the river, so he either has AA/KK or a set, made either on the turn or river.

Hand 3: Bet bigger on flop, near $70 ish. As played I dunno, I would fold the river vs a 20/15 here. I doubt this is a bluff often enough too call. JJ also wins now too.