hand 1: well played if against a tight player, but against a known calling station, you gotta check it down as you're not gonna push him off his pair
hand 2: you're better off folding this against the raise preflop as the best you're gonna get is your straight or top 2 pair. bet the turn and fold to a big raise, raising the river... well you can't call off $10 more with just a bluff