H1: Just shove the flop. You are crushing a lot of hands (TT-QQ even when they have a diamond), have an edge over AdKx/AdQx and have pretty decent equity against black AA and sets. You're only ever crushed by AQdd (1 combination) or AdAx (3 combinations). BB totally failed as well with the 3bet preflop and managing not to get it all in on the turn or even river. Because he is so terrible that makes not 4betting KK an even bigger mistake.
H2; could see a check on the turn but betting is fine as well to target hands like 44,88-TT and 78s. When facing a raise you're getting pretty good odds even though it is unlikely he would raise with less. I guess since you can have all the sets, 89s, bigger overpairs and flush draws you can afford to let this go some of the time, especially since you're likely to face a bet on the river but be careful this isn't one of the best hands you can have here when you fold. With the population tendency that turn raises are pretty strong you probably lose less by folding.
Hand 2 you can make a fold on the turn the 6 completes a host of 2 pair and straits and he also has all sets in his range. The price does seem to good to fold though with the min raise.
1) 4bet shove pre, as played I check back turn, check behind on river is good.
2) as stated above, don't think you played the hand poorly, I can see a line of check/call on the turn but betting is fine. Turn raise and bet on the river after your check shows strength but unless you had info on villain that we don't know, I'm probably looking him up with a call for that price.
How often do you win a stack with a set? If you don't loose your stack with a set from time to time you're not playing them right.
I try to see all the flops with pp unless someone 3bets, and if I hit my set I generally try to go for 3 streets of value unless there's a dangerous straight or something.
1: Apart from not 4betting pre I think you played this fairly perfect. He will cbet flop with a lot of hands here, including AJ+, TT+ and any A of diamonds. If you shove here you are getting a lot of folds from hands that are worse than yours but may continue betting the turn and river, but also you arent getting called by worse often enough to make it the most profitable play. On the turn again I like the bet. He shows weakness here, and alot of the time you will get big aces and flush draws to fold here. On a board like this checking back the river is probably the best play. A bet here is essentially turning your hand into a bluff as you are never getting called by worse, and on this board it would be a fairly risky bluff as played.
2: Again, pretty well played. Pre, flop and turn are pretty standard. However, I think that on the river its a clear fold. At these stakes I would say that a min raise is almost always a marker of a strong, made hand. Its tempting to call 40c to win $1.70, but with the flat call from the btn pre there are lot of hands in his range that are beating you, including sets, straight draws that got there on the turn and a rivered 2 pair. In short, you played it fine, but I think you need to find a fold otr.
These hands are quite similar as I see it. 1st one you get a monotone flop and then a turn that completes a load of straights as well. I reckon you could have bluffed him off on the river if you bombed it - he checked the turn out of fear of the flush. Not sure this is a good hand to try that though because made straights might well call.
2nd hand is a definite river fold. Villain doesn't seem to care about the ace that dropped, so he's obviously on better than 1 pair here. Since there are multiple straights and two pairs as well as sets that could have hit here I think it's probably best to fold to the turn re-raise as well.