In hand #1 I'd either check/fold to any reasonable bet (against more passive player) or consdier pulling "fake stack-a-donk" semibluff (against more laggy player).

In hand #2 it's easiest turn bet ever. IME flat calls on Axx 2-tone boards are either made hand willing to play big pot or draw. Not many people "float" on that kind of board.

Hand #3:

Personally I would fold that speculative hand to PFR cause I hate to play OOP drawing hands.

Flop: Ni han

Turn: vnb