50NL - help me gauge my agression

[swiggidy]

I feel like I'm giving my $$ away to better hands, and letting worse hands get away. Any comments are appreciated, thanks for your time.

{EDIT: the only read is the passiveness, they fold to my bets with nothing, rarely re-raise or check-raise}

Hand 1:
Poker Room skin
Blinds: $0.25/$0.50
Converter

Stack sizes:
UTG: $15.80
UTG+1: $37.75
MP1: $87.20
MP2: $48.05
MP3: $6.50
hero: $38.25
Button: $43.20
SB: $62.75
BB: $66

Pre-flop: (9 players) hero is CO with K A
4 folds, MP3 calls, hero raises to $2.5, Button folds, SB calls, BB raises to $5, MP3 folds, hero calls, SB calls.

Flop: K A 9 ($15.5, 3 players)
SB checks, BB checks, hero bets $10, SB folds, BB calls.

Turn: 9 ($35.5, 2 players)
BB checks, hero is all-in $22.75,

Hand 2:

Stack sizes:
UTG: $57.20
UTG+1: $50
UTG+2: $16.40
MP1: $144.85
MP2: $14.35
MP3: $50.30
CO: $111.95
Button: $48.75
SB: $44.85
hero: $57

Pre-flop: (10 players) hero is BB with Q Q
2 folds, UTG+2 calls, 4 folds, Button raises to $2, SB calls, hero raises to $5, UTG+2 calls, Button calls, SB folds.

Flop: Q 8 K ($17, 3 players)
hero bets $10, UTG+2 raises to $10.9, Button calls, hero calls.

Turn: 4 ($49.7, 3 players)
hero bets $30,

Hand 3:

Stack sizes:
UTG: $21.30
UTG+1: $99.50
UTG+2: $15.05
MP1: $44
MP2: $86.45
MP3: $51.30
CO: $4.50
hero: $43.75
SB: $58.70
BB: $54.50

Pre-flop: (10 players) hero is Button with K K
UTG calls, UTG+1 calls, 3 folds, MP3 raises to $2.25, CO folds, hero calls, 4 folds.

Flop: 5 4 T ($6.25, 2 players)
MP3 checks, hero bets $5, MP3 calls.

Turn: 8 ($16.25, 2 players)
MP3 bets $8.25, hero raises to $25,

Hand 4:

Stack sizes:
UTG: $16.55
UTG+1: $64.55
hero: $58.75
MP2: $50.85
MP3: $7
CO: $47.85
Button: $36.85
SB: $44.75
BB: $45.30

Pre-flop: (9 players) hero is MP1 with 8 7
UTG calls, UTG+1 calls, hero calls, 4 folds, SB calls, BB checks.

Flop: 6 5 4 ($2.5, 5 players)
BB bets $1, 2 folds, hero raises to $3.5, SB folds, BB calls.

Turn: T ($9.5, 2 players)
BB checks, hero bets $7.5,

[zook]

1. Stats on BB are crucial. Against some opps. I'm folding to the pre-flop minraise. No matter what, I'm checking behind the turn. Most 50NL opponents aren't re-raising pre-flop with AQ or A9, which are about all you beat that call your flop bet.

2. Re-raise to $6 pre-flop, otherwise fine.

3. Re-raise pre-flop. Played well post-flop, imo.

4. Raise to $5 on the flop, otherwise fine.