100nl - Some more hands

[Stacks]

Hand 1 - Only have 27 hands on villain. He's running 74/61 over those hands, with a 33% 3bet (3/9). Nothing of note postflop wise. Just a few hands before this he 3bet/shoved into my AK w/ AQs.

Stacks:
Hero ($165.57) 166bb
SB ($103.15) 103bb
BB ($129.93) 130bb

Pre-Flop: ($1.50, 3 players)
Hero raises to $2, SB calls $1.50, BB calls $1

Flop: ($6, 3 players)
SB checks, BB bets $3.80, Hero calls $3.80, SB folds

Turn: ($13.60, 2 players)
BB bets $9, Hero raises to $31, BB raises to $115.13, Hero calls $93.13

Is this the best line?

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Hand 2 - Villain is a 25/21 reg over 6.7k hands. SB v BTN 3bet of 16% (40/248), and folds those 3bets to 4bets 75% (9/12). His cbet flop in 3bet pot is 74% (70/94).

It feels like he's been owning me the past few thousand hands. I think he's probably one of the better regs at smallstakes on this network.

Stacks:
UTG ($64.01) 64bb
UTG+1 ($100) 100bb
CO ($199.48) 199bb
Hero ($100) 100bb
SB ($100.50) 101bb
BB ($137.88) 138bb

Pre-Flop: ($1.50, 6 players)
3 folds, Hero raises to $3, SB raises to $9.50, 1 fold, Hero calls $7

Flop: ($20, 2 players)
SB bets $9.85, BHero raises to $25, SB raises to $80.65, Hero calls $65

This hand seems pretty standard postflop I think. I'm more wondering about whether my decision to flat preflop is better than 4bet/call, and my overall strategic approach against this guy's 3bets from the blinds.

I've seen him 3bet steals from the blinds with {KK, JJ, 88, AK, A5s, T9s, T6s, ATo-AJo, QJo}. Given his highish fold to 4bet in this spot, should I tend towards flatting my premium hands, and constructing a 4betting range weighted heavily towards bluffs? That's what I've been doing versus his 3bets from the blinds for the most part.

Overall his 3bet versus steal is 11%, and fold versus 4bet after 3betting versus steal is 61% (smallish sample (11/18).

Just looking to play better versus him in the future, and thus trying to find where I can best exploit him.

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Hand 3 - Villain is a 65/26 fish over 600 hands. Overall 3bet of 10% (25/251). Although I don't ever remember his typical 3bet sizing. Likely it wasn't this small or it would have probably stood out to me.

Stacks:
UTG ($249.10) 249bb
UTG+1 ($100) 100bb
Hero ($123.93) 124bb
BTN ($100.05) 100bb
SB ($86.51) 87bb
BB ($164.08) 164bb

Pre-Flop: ($1.50, 6 players)
2 folds, Hero raises to $3, 1 fold, SB raises to $5.50, 1 fold, Hero calls $3

Flop: ($12, 2 players)
SB checks, Hero bets $8, SB raises to $48

I guess just fold? I think given his preflop sizing and his c/r he just has an overpair pretty much always?

Do I fold to a smaller c/r size of say $20-$24?

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Hand 4 - This is 30bb CAP. Villain is 63/35 over 60 hands. Fold to 3bet of 0 (0/3).

Stacks:
UTG ($155.88) 78bb
Hero ($288.62) 144bb
BTN ($141.72) 71bb
SB ($41) 21bb
BB ($56.69) 28bb

Pre-Flop: ($3, 5 players)
UTG raises to $6, Hero raises to $16, 3 folds, UTG calls $10

Flop: ($35, 2 players)
UTG checks, Hero checks

Turn: ($35, 2 players)
UTG bets $12, Hero raises to $44

So, I'm pretty bad at CAP, and only sit when a notable fish is sitting.

On the turn, I just didn't think I could possibly fold TP + GS with such a small SPR (1.2ish).

I think it's standard, but like I said, I'm bad at CAP (even worse than regular games), so wouldn't mind a line check.

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Hand 5 - It's a 50bb short table. Villain + BB are rather fishy, which is why I opened PF.

Villain is 36/16 over 160 hands.

Stacks:
Hero ($69.75) 70bb
UTG+1 ($44.90) 45bb
CO ($51.20) 51bb
BTN ($56.14) 56bb
SB ($116.47) 116bb
BB ($31) 31bb

Pre-Flop: ($1.50, 6 players)
Hero raises to $3, 1 fold, CO calls $3, 3 folds

Flop: ($7.50, 2 players)
Hero bets $5, CO calls $5

Turn: ($17.50, 2 players)
Hero bets $12, CO calls $12

River: ($41.50, 2 players)
Hero bets $39.18

Not really sure about river. And whether I should be valueshoving or whether check/calling might be better given KQ/QT/FDs all missed, and he has a moderate overall agg frequency of 45%, and aggf of 67% on river.

What should our shoving range look like here? And what should our check/calling range look like here?

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Overall, I have to say I think I play rather poorly in 3bet pots and postflop when I don't have the initiative (after say flatting PF, or facing a raise postflop). I certainly have room for improvement the times I have initiative, but I feel like the majority of spots where I get lost fall into those 2 categories. And that I don't play those spots anywhere near as well as the better regs at small-midstakes.

I feel like if I could wrap my head around those situations a bit better, and learn how to better approach those spots and analyze them, I'd shore up so many of my leaks. But, whenever I take a look at those spots and try to decide what my ranges should look like in given hypothetical spots, I can't seem to come to any strong conclusions.

Any videos/books out there with a really solid player just playing a shitload of 3bet pots, or playing postflop after flatting frequently? So I can get a better idea of what I'm mis-analyzing in those spots.