I'm running like absolute garbage like down 15 buyins or something

It's the first real time I've experienced anything like this so I'm questioning every single move I make in order to make sure my play is alright. So, here are some hands from recent sessions:

Hand 1: Villain is 22/2 and is a fish

PokerStars No-Limit Hold'em, $0.50 BB (7 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Button ($45.60)
SB ($43.40)
BB ($47.25)
UTG ($50)
Hero (MP1) ($50)
MP2 ($30.50)
CO ($50.75)

Preflop: Hero is MP1 with ,
1 fold, Hero bets $1.50, 1 fold, CO calls $1.50, Button calls $1.50, 2 folds

Flop: ($5.25) , , (3 players)
Hero bets $3, CO calls $3, 1 fold

Turn: ($11.25) (2 players)
Hero bets $5.50, CO raises to $12, Hero wants to kill a puppy



Total pot: $63.25 | Rake: $3


Hand 2: Villain is like 40/11 is this ever not the nuts?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

UTG ($50)
MP ($45.65)
CO ($49.75)
Button ($51.65)
SB ($24.50)
Hero (BB) ($50)

Preflop: Hero is BB with ,
UTG bets $1.50, MP calls $1.50, 2 folds, SB calls $1.25, Hero raises to $7, 1 fold, MP raises to $15, Hero wants to find a second puppy...


Hand 3:

Villain is a 36/23 fish who overvalues his pairs

PokerStars No-Limit Hold'em, $0.50 BB (8 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

UTG+1 ($51.70)
MP1 ($69.15)
Hero (MP2) ($51.65)
CO ($50)
Button ($58.30)
SB ($55.90)
BB ($70.05)
UTG ($41)

Preflop: Hero is MP2 with ,
UTG bets $2, 2 folds, Hero raises to $6, 4 folds, UTG calls $4

Flop: ($12.75) , , (2 players)
UTG checks, Hero checks

Turn: ($12.75) (2 players)
UTG bets $6.50, Hero calls $6.50

River: ($25.75) (2 players)
UTG bets $28.50 (All-In), Hero folds then looks for a third puppy

Total pot: $25.75 | Rake: $1.25

Results:
UTG didn't show
Outcome: UTG won $24.50

Hand 4:

UTG opener is Doomdays and is generally a psycho who never folds to 3 Bets. The rest are regs. should I 3-bet bigger say to like $7.50? And how about flop/turn checks?

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP2 ($50.75)
MP3 ($85.60)
CO ($35)
Button ($34.15)
SB ($43.20)
Hero (BB) ($77.05)
UTG ($70.65)
UTG+1 ($62.75)
MP1 ($20)

Preflop: Hero is BB with ,
UTG bets $1.25, UTG+1 calls $1.25, 1 fold, MP2 calls $1.25, 4 folds, Hero raises to $6.50, UTG calls $5.25, UTG+1 calls $5.25, MP2 calls $5.25

Flop: ($26.25) , , (4 players)
Hero checks, UTG checks, UTG+1 checks, MP2 checks

Turn: ($26.25) (4 players)
Hero plans on c/f'ing and immediately after going to the pound

Results:
UTG+1 didn't show
Outcome: UTG+1 won $24.95

Hand 5:

Villain in CO is 11/0 and has played 4 hands. How is flop c-bet, prob spew I'm guessing. Now that I've c-bet I wanna c/f this card

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP3 ($47.35)
CO ($25.55)
Button ($45.75)
SB ($53.10)
BB ($51.50)
Hero (UTG) ($53.60)
UTG+1 ($31.25)
MP1 ($88.25)
MP2 ($50.75)

Preflop: Hero is UTG with ,
Hero bets $1.50, 4 folds, CO calls $1.50, 1 fold, SB calls $1.25, 1 fold

Flop: ($5) , , (3 players)
SB checks, Hero bets $3.50, CO calls $3.50, SB calls $3.50

Turn: ($15.50) (3 players)
SB checks, Hero is officially on a puppy spree


***For the Record I love puppies, and have 2 of my own and would never do anything to harm one***