I dont mind checking so much in hand #2, he should have a ton of QJfd or QJT hands, and he can't call a ton of hands since we block 2 kings and 1 ace. Wouldn't you agree?
Hand 1: It isn't so much that value-betting is good as it is that you're out of position with a small stack relative to pot size. Betting is better than checking. With deeper stacks it wound't be.
Hand 2: Absolutely value bet river. Against the min-raise however you should seriously consider folding. You're getting great odds, but its just very rare a player min-raises rivers like this in position as a bluff, and equally rare that it will be worse for value.
Hand 3: I get it in with no reads. You indeed have terrible equity against super-nits that are only 3betting pre with AA, but I don't think players on average at this level are that predictable. I could be wrong. But when all your opponent does is 3bet and cbet that isn't enough IMO to warrant a hero fold.
1) absolutely standard vbet, tons of 2pair hands will herocall you on this texture with this little less
2) this is actually an interesting spot, in terms of how to construct your betting ranges on multiple streets, how often you bluff river, how often you give up on missed draws etc
readless canīt fault you for c/c or vbetting, in terms of balancing you personally should know whether this is a bet or a c/ for your range. as played, sucks. in a vacuum call, but prob could make a highly exploitable fold
3) never folding.
Second hand I would re-pot pre. As played, I think I probably check/call on the river there -- what is he calling a third bet with that's worse than KK?