Hand 1 : I like your call here PF with this hand. If it were KQo I'd lean towards a fold.

There's nothing wrong with raising but I think calling is better. A villain 3-betting this small is usually not all that good so I don't think there's any need to get tricky here by raising.

Against a thinker I'd be more likely to raise since it will freeze them a lot and they'll flat-call fearing a set and check the turn to you (you can then check behind and get to the river cheaply).

Here though, this type of player (just someone who 3-bets less than 3x OOP) will usually pay you off really nicely when you hit your flush so flat-calling is good.

Hand 2 : don't think it matters what you do on this turn so long as you have a plan for villain's possible checkraise and then for the river if he flat-calls (i.e. fold any diamond? Value-bet non-diamond rag?).

This type of villain has a huge range of calling hands on this flop so personally I give him a free card here lots and consider calling just about any river lead by him. Depending on his checking speed, I may value-bet a raggy river since they "won't believe you" so often on this paired board and call-down with insane garbage.

Hand 3 : Eww. Good thing I'm not playing this hand vs myself since I'd show up with air a whole lot if I were villain here.

He's repping a set so folding is fine but I'm always confused by turn leads i big pots. Is he afraid you might check through? The fact that he leads the turn makes me think he's simply protecting JJJ without the boat meaning that you have outs and you'll almost certainly get paid when you hit.

Tainted outs that give him a boat make it a close fold imo.

Hand 4 : NH. Villain has QQ-JJ-99 here a lot but he's giving you such a nice price...

IMO all options are good preflop. Nothing bad about getting it in vs donk min-raising shorty for 50 bb's w 1010.

Hand 5 :

I like your line up till the river. I think you lose lots of value by him checking worse made hands behind since your line looks like a flush. Bet 30-35$ and think about folding to a push.

Hand 6 is fine in my eyes.