[Closed] NL2: Ax top pair -> fold?

Hi,
i don't have any specific reads on the opponents or any history. Is a fold the best solution?

Hand 1)

Grabbed by Holdem Manager
NL Holdem $0.02(BB) Replayer
SB ($0.98)
BB ($0.80)
UTG ($2.87) 59/4 (30h)
UTG+1 ($0.80)
UTG+2 ($4.91)
MP1 ($5.11)
Hero ($2.23)
BTN ($0.80)

Dealt to Hero A♦ 4♦

UTG calls $0.02, fold, fold, fold, Hero calls $0.02, fold, SB calls $0.01, BB checks

FLOP ($0.08) J♠ 8♦ J♣

SB checks, BB checks, UTG checks, Hero checks

TURN ($0.08) J♠ 8♦ J♣ A♠

SB checks, BB folds, UTG bets $0.05, Hero folds

Hand 2)

Grabbed by Holdem Manager
NL Holdem $0.02(BB) Replayer
SB ($1.28)
BB ($2) 49/0/0.x/52 (50h)
UTG ($0.76)
UTG+1 ($2.24)
UTG+2 ($4.45)
Hero ($2.79)
BTN ($1.65)

Dealt to Hero A♦ 3♦

fold, fold, fold, Hero raises to $0.08, fold, SB calls $0.07, fold

FLOP ($0.18) A♥ 3♣ 7♦

SB checks, Hero bets $0.12, SB calls $0.12

TURN ($0.42) A♥ 3♣ 7♦ 7♣

SB checks, Hero checks

RIVER ($0.42) A♥ 3♣ 7♦ 7♣ 4♥

SB bets $0.24, Hero folds