Hand 1:
We're behind his calling range.

Hand 2:
I'm gonna say it's close, but probably everyone else will call that nitty and say it's a clear vbet. So I would probably listen to them.

Hand 3:
There's very clear value to be had here, and bluff catching is silly because almost his entire range is pair+. He's gonna make far more mistakes if we bet then if we try to tempt him to bluff.

Hand 4:
B/f. We get bluffed off the best hand sometimes, but there's too much value here to pass up on.

Hand 5:
Raise preflop, bet flop harder, bet turn harder, and easy peezy bet the river.