How do these hands look?

Hand 1, check-raise the flop? reraise preflop? or is this line gold...

Poker Stars
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter

Stack sizes:
UTG: $54.75
UTG+1: $49.25
CO: $51
Button: $61.40
HERO: $51.95
BB: $31.70

Pre-flop: (6 players) HERO is SB with
UTG folds, UTG+1 raises to $2, 2 folds, HERO calls, BB folds.

Flop: ($4.5, 2 players)
HERO checks, UTG+1 bets $5, HERO calls.

Turn: ($14.5, 2 players)
HERO checks, UTG+1 bets $13, HERO raises to $26,

FLopped set, and not very confident that he has a flush. the previous hand he raised 7x BB when I open limped from the sb. I usually raise preflop here, but there must have been a reason why i didnt(hand history from a few days ago.)

Poker Stars
No Limit Holdem Ring game
Blinds: $0.25/$0.50
5 players
Converter

Stack sizes:
UTG: $30
UTG+1: $49.25
CO: $50
HERO: $55.80
SB: $30.40
BB: $86.95

Pre-flop: (5 players) HERO is Button with
UTG calls, CO folds, HERO calls, SB raises to $1, BB folds, UTG calls, HERO calls.

Flop: ($3.5, 3 players)
SB checks, UTG checks, HERO bets $3, SB calls, UTG folds.

Turn: ($9.5, 2 players)
SB checks, HERO bets $5, SB raises to $22, HERO raises to $39, SB calls all-in $4.4.
Uncalled bets: $12.6 returned to HERO.

River: ($62.3, 1 player + 1 all-in - Main pot: $62.3)


Results:
Final pot: $62.3

I dont want to fourbet, cuz his calling range crushes me, so i decided to just play it like a small pair.

Poker Stars
No Limit Holdem Ring game
Blinds: $0.25/$0.50
5 players
Converter

Stack sizes:
UTG: $75.55
CO: $79.45
UTG+1: $49.25
Button: $53.80
SB: $18.60
HERO: $49.25

Pre-flop: (5 players) HERO is BB with
UTG raises to $2, CO raises to $5, 2 folds, HERO calls, UTG calls.

Flop: ($15.25, 3 players)
HERO checks, UTG checks, CO bets $10, HERO folds, UTG folds.
Uncalled bets: $10 returned to CO.

Results:
Final pot: $15.25