Am I too weak in these spots? I feel I might be abused a lot.

Hand History for Game 1111111111 (Party)
$100.00 USD NL Texas Hold'em - Saturday, August 13, 11:37:23 ET 2016
Table Jet 3 (Real Money)
Seat 1 is the button
Seat 2: Hero ( $113.83 USD ) - VPIP: 22, PFR: 17, 3B: 6, AF: 2,1, Hands: 453485
Seat 1: Player1 ( $249.08 USD ) - VPIP: 19, PFR: 10, 3B: 0, AF: 0,0, Hands: 48
Seat 3: Player3 ( $100.00 USD ) - VPIP: 24, PFR: 19, 3B: 7, AF: 1,9, Hands: 2037
Seat 4: Player4 ( $155.30 USD ) - VPIP: 23, PFR: 17, 3B: 7, AF: 1,7, Hands: 1677
Seat 5: Player5 ( $113.05 USD ) - VPIP: 13, PFR: 10, 3B: 5, AF: 1,5, Hands: 158
Seat 6: Player6 ( $196.30 USD ) - VPIP: 25, PFR: 19, 3B: 8, AF: 2,2, Hands: 5505
Hero posts small blind [$0.50 USD].
Player3 posts big blind [$1.00 USD].
* Dealing down cards *
Dealt to Hero [ Ac Jd ]
Player4 folds
Player5 folds
Player6 folds
Player1 folds
Hero raises [$2.50 USD]
Player3 raises [$8.00 USD]
Hero calls [$6.00 USD]
* Dealing Flop * [ 4c, As, 7d ]
Hero checks
Player3 bets [$5.64 USD]
Hero calls [$5.64 USD]
* Dealing Turn * [ 8s ]
Hero checks
Player3 bets [$20.00 USD]
Hero calls [$20.00 USD]
* Dealing River * [ 3s ]
Hero checks
Player3 bets [$65.36 USD]
Hero folds
Player3 wins $131.64 USD from main pot

Basically I see this line a lot on boards where I'm supposed to be capped. A smaller than average continuation bet and then just bomb turn and river in position. I was afraid he was getting there on the river with many of his bluffs and also valuebetting AA, AK, AQ combos.

Hand History for Game 1111111111 (Party)
$100.00 USD NL Texas Hold'em - Thursday, August 11, 06:21:29 ET 2016
Table Jet 3 (Real Money)
Seat 1 is the button
Seat 2: Player2 ( $144.89 USD ) - VPIP: 21, PFR: 15, 3B: 7, AF: 2,0, Hands: 106
Seat 4: Hero ( $242.75 USD ) - VPIP: 22, PFR: 17, 3B: 6, AF: 2,1, Hands: 453485
Seat 6: Player6 ( $110.79 USD ) - VPIP: 29, PFR: 24, 3B: 21, AF: 1,6, Hands: 79
Seat 3: Player3 ( $100.78 USD ) - VPIP: 22, PFR: 13, 3B: 0, AF: 1,5, Hands: 23
Seat 5: Player5 ( $131.42 USD ) - VPIP: 24, PFR: 19, 3B: 12, AF: 3,1, Hands: 9757
Seat 1: Player1 ( $101.80 USD ) - VPIP: 23, PFR: 19, 3B: 7, AF: 3,2, Hands: 4832
Player2 posts small blind [$0.50 USD].
Player3 posts big blind [$1.00 USD].
* Dealing down cards *
Dealt to Hero [ Jh Ac ]
Hero raises [$3.00 USD]
Player5 raises [$9.00 USD]
Player6 folds
Player1 folds
Player2 folds
Player3 folds
Hero raises [$21.00 USD]
Player5 calls [$15.00 USD]
* Dealing Flop * [ Kh, Ad, Kd ]
Hero checks
Player5 bets [$22.00 USD]
Hero folds
Player5 wins $69.03 USD from main pot

Very aggressive 3better (over 11%). I turned my AJ to bluff and got kinda dream flop where I liked to bluffcatch but since regular seemed to commit himself with strong bet sizing on the flop I made very tight fold. I don't see he is just giving up on many turns tho I have hard times putting he on the hand but he might call 4bet very wide here. I didn't expect such a big bet. Is this insanely tight? If I call once I don't see any card that I will fold on turn on river. Anyways it was UTG vs. UTG +1 and only top pair with mediocre kicker.