top 5 losing hands from a 6 buyin loss over 800 hands...

my image at all these tables - very tight

Hand #1-
vill taggy, hasnt done anything unusual. he cant be drawing here can he? I have to put him on 44, TT or a bluff... (def capable of calling pre with TT)
Party Poker No-Limit Hold'em, $0.50 BB (5 handed) - Party-Poker Converter Tool from FlopTurnRiver.com

SB ($53.17)
BB ($55.08)
UTG ($31.75)
Button ($10.50)
Hero (MP) ($50)

Preflop: Hero is MP with ,
1 fold, Hero bets $2, 2 folds, BB calls $1.50

Flop: ($4.25) , , (2 players)
BB checks, Hero bets $3.03, BB calls $3.03

Turn: ($10.31) (2 players)
BB checks, Hero bets $7, BB raises $19, [color=#CC3333]Hero obvious shove? is there any other way to play this hand?

Hand #2-
I know the preflop call was horrible... and the donk bet on flop not much better, but as played....
villain stand tag,
he took a stack from me about 4 orbits earlier... set over set

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

Button ($50)
BB ($10)
CO ($60.48)
Hero (SB) ($50)
UTG ($41.50)
MP ($76.78)

Preflop: Hero is SB with ,
UTG calls $0.50, 2 folds, Button bets $2.25, Hero calls $2, 2 folds

Flop: ($5.50) , , (2 players)
Hero bets $3.92, Button calls $3.92

Turn: ($13.34) (2 players)
Hero bets $9.51, Button raises to $43.83 (All-In), Hero ...

hand 3-
is it horrible opening here UTG? trying to open my ranges, bot sure that I should be UTG
I did know and expect callers here ,, but anyways, postflop is a good example of where I would normally fold. is that correct or another sign of my nittyness?
Party Poker No-Limit Hold'em, $0.50 BB (6 handed) - Party-Poker Converter Tool from FlopTurnRiver.com

BB ($113.70)
CO ($46.85)
SB ($79.66)
MP ($18.25)
Hero (UTG) ($50)
Button ($50.50)

Preflop: Hero is UTG with ,
Hero bets $2, 2 folds, Button calls $2, SB calls $1.75, BB calls $1.50

Flop: ($8) , , (4 players)
SB checks, BB checks, Hero bets $5.50, Button raises $12.50, 2 folds, [color=#CC3333]Hero...

Hand 4,
vill is def capable of shoving alot worse here, and I knew it when I 4bet. I also knew the other would fold. vill is a 38/19 frequently visited fish.
is the 4 bet correct?
Party Poker No-Limit Hold'em, $0.50 BB (6 handed) - Party-Poker Converter Tool from FlopTurnRiver.com

Button ($36.69)
BB ($35.41)
UTG ($50.50)
CO ($15.01)
MP ($14.73)
Hero (SB) ($54.99)

Preflop: Hero is SB with ,
UTG bets $2, 2 folds, Button raises $5, Hero raises $15.75, 2 folds, Button raises to $36.69 (All-In), Hero calls $20.69

hand 5-
do we ever NOT re-raise sets on a 2 toned flop?

Party Poker No-Limit Hold'em, $0.50 BB (5 handed) - Party-Poker Converter Tool from FlopTurnRiver.com

SB ($56.39)
Button ($29.65)
MP ($9.25)
UTG ($11.36)
Hero (BB) ($50)

Preflop: Hero is BB with ,
3 folds, SB bets $1.75, Hero calls $1.50

Flop: ($4) , , (2 players)
SB bets $2, Hero ..