hand 1 definitely bet flop, axs hands tht he 3bet pre will always call at least 2 streets and we almost always have the best hand.
As played turn is a very very easy raise as we beat basically everything he has and he will call worse.
Vs his sizing, river is most likely a fold. People dont 3bet, check, min bet, pot with a bluff.
Hand 2, we need info ofc. But would flat pre if he was unknown.
Hand 3, hand isnt strong enough to c-raise so would put this into leading range and expect worse to call. As played would call turn too, but probably bet 1-3rd or less on river as he can likely be raising some 2 pair or something tht hewants to show down (he min raised turn) and if he raises then ofc fold. As played, very very easy fold as his turn range is polarized btween hands that crush us or hands that want to show down.
Yeh hand 1 i'd usually bet flop, checking back sometimes is ok, but bet as a standard. Turn is really really clear raise, anything else is pretty bad imo, with his sizing and action you're just always good and he can call with a bunch of 1 pair/draws which we beat all of. Seems optimistic to think you're ahead on this river when he bets so big, but turn is the big leak.
Hand 2 seems ok... to a min opener i'd usually 3-bet here, but flatting is obv standard too, fold to the 4-bet is fine.
Hand 3 seems good, can definitely lead flop a decent % of the time, but as played it's all good, his range for taking this line is crushing you. Cant see you beating much that isnt a bluff.