Villain is very active preflop, but I haven't noted him getting out of line postflop. I decide to check back flop with no fd or straight blockers. V leads 75% turn, I call. Facing a psb on river with no heart and a 9 as a straight blocker, do I need to call this sometimes?

Yesterday I had such a strange random experience, that it took me a while to recover, not because of the size of the pot, but because of what has happened. So I guess you know this shitty feeling when some one hits quads against your full on the river, or goes all-in pf with KK vs your AA and you lose. It sucks, but that is explainable. What happened to me was completely different. Please look at the hand (it is 1-2$) and share your thoughts. So the guy here is playing for a while on the table and is up like 2-3 buy-ins. He opens button, I 3-bet, I bet half pot flop, he calls. I bet half pot turn looking for hands like TJJK or TJKK, he calls. River I do a bet of 50$ and he clicks me bet 100$. I am calling out of curiosity already and because the hand doesn't make to much sense. And here is the hand. Really felt like I was scammed.

PokerStars Zoom .10/.25. The main opponent is OK reg (20/16/7; 769 hands), who is capable of folding hands. The SB is very loose (44/22/3; 355 hands). It is highly likely that the SB would have bet the turn if he had anything above mediocre. My thought was that I block straight and unblock flush draw, so I could make many better hands fold. I guess the opponent called because the same (un)blockers =) Was the bet on the flop reasonable in a multiway pot? How about the river play? https://www.pokerstarsreplayer.com/hands/51b4335768

Feel like I misplayed this. I just 3 bet these same two opponents and they both called and folded OTF, so when UTG 4 bets it's aces heavy. Is the call PRE ok? Is it a call OTF w/just BDFD's? https://www.pokerstarsreplayer.com/hands/5183201676

When playing on wsop gold on the 8 max mandatory straddle and ante with 200bb deep. Do you open pot for 11bb or something smaller like 7 or 8bb? When someone open raises 11bb and you want to 3 bet do you pot for 40bb or use a smaller sizing like 25 or 33bb?