Hand 1: I usually GII pre but don't hate flatting. Bet slightly bigger on turn, I vbet most rivers but not that one, ckbk.

Hand 2: Your missing a load of 2pair hands from villain's range that he raises flop with, also pair+draw hands. At higher limits I might bet that turn+most rivers to fold out sets and 2pair hands, maybe at 2nl better to ckbk and fold river.

Hand 3: value bet river from 8x and maybe 7x hands. as played c/f w/o reads.