no reads, new to table

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

Stack sizes:
UTG: $31.70
CO: $77.20
HERO: $49.25
SB: $24.45
BB: $120.80

Pre-flop: (5 players) HERO is Button with J J
UTG raises to $1.5, CO folds, HERO raises to $4, 2 folds, UTG calls.

Flop: 4 4 5 ($8.75, 2 players)
UTG checks, HERO bets $6, UTG calls.

Turn: 5 ($20.75, 2 players)
UTG checks, HERO bets $22, UTG calls all-in $21.7.
Uncalled bets: $0.3 returned to HERO.

River: Q ($64.15, 1 player + 1 all-in - Main pot: $64.15)


Results:
Final pot: $64.15

diff table

#2
second hand I don't have HH for, but basically a straight is on the board, but so are 4 spades, the 4th hitting on the river. I have the Q of spades. Pot is $20, I have $35 left, villian is big stack of $125. Villian acts first and bets $10. What do you do?

#3, diff table, no reads, 2nd hand i just sat down

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

Stack sizes:
UTG: $22.10
UTG+1: $91.75
CO: $35.05
Button: $22.25
HERO: $50.95
BB: $32.25

Pre-flop: (6 players) HERO is SB with A 6
2 folds, CO calls, Button folds, HERO calls, BB checks.

Flop: 6 A 7 ($1.5, 3 players)
HERO checks, BB checks, CO bets $0.5, HERO raises to $1.5, BB folds, CO raises to $8, HERO calls.

Turn: 4 ($17.5, 2 players)
HERO checks, CO is all-in $26.55, HERO??