First two hands at the table. Weak folds?

First two hands at the table out of position. No hands on opponent.
First:
PokerStars No-Limit Hold'em, $0.05 BB (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($10.30)
Hero ($6)
UTG ($3.09)
MP ($10.60)
CO ($1.53)
Button ($2.53)

Preflop: Hero is BB with T, 7.
UTG calls $0.05, MP calls $0.05, 3 folds, Hero checks.

Flop: ($0.17) 3, 7, 2 (3 players)
Hero bets $0.15, UTG folds, MP calls $0.15.

Turn: ($0.47) 7 (2 players)
Hero bets $0.25, MP calls $0.25.

River: ($0.97) 5 (2 players)
Hero bets $0.6, MP raises to $2.4, Hero folds.

Final Pot: $2.17

2nd hand at the table:
PokerStars No-Limit Hold'em, $0.05 BB (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

Button ($10.28)
Hero ($4.95)
BB ($3.04)
UTG ($11.62)
MP ($1.53)
CO ($2.53)

Preflop: Hero is SB with , .
UTG calls $0.05, 1 fold, CO calls $0.05, 1 fold, Hero raises to $0.15, BB calls $0.10, UTG calls $0.10, CO calls $0.10.

Flop: ($0.60) , , (4 players)
Hero bets $0.4, BB folds, UTG calls $0.40, CO folds.

Turn: ($1.40) (2 players)
Hero bets $0.85, UTG raises to $2.35, Hero calls $1.50.

River: ($6.10) (2 players)
Hero checks, UTG bets $1.7, Hero folds.

Final Pot: $6.10

Very hard to call raise after such a weak turn bet,even though I did expect him to raise...the river ruined it for me.
How do you play this?

First one no.

On the second one don't raise QTs from the blinds, and I would have folded on the turn.