A5 suited - in layter stages of game - facing villan

Would appreciate any thoughts regarding my actions in this hand.

This was a $11 buy-in 1R/ 1A 25K Grtee Poker Maximus game.
Apx 200 people left - 120 itm

Merge - $0+$0|<> NL - Holdem - 9 players
Hand converted by PokerTracker 4

CO: 33,606 (VPIP: 5.13, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 39)
BTN: 7,390 (VPIP: 20.00, PFR: 11.90, 3Bet Preflop: 11.11, Hands: 45)
SB: 22,380 (VPIP: 21.62, PFR: 22.86, 3Bet Preflop: 0.00, Hands: 38)
Hero (BB): 22,634
UTG: 36,850 (VPIP: 25.73, PFR: 17.68, 3Bet Preflop: 5.56, Hands: 171)
UTG+1: 58,366 (VPIP: 10.59, PFR: 5.06, 3Bet Preflop: 0.00, Hands: 86)
UTG+2: 7,890 (VPIP: 12.50, PFR: 14.29, 3Bet Preflop: 20.00, Hands: 8)
MP: 16,427 (VPIP: 10.53, PFR: 8.11, 3Bet Preflop: 14.29, Hands: 38)
MP+1: 13,326 (VPIP: 10.00, PFR: 10.00, 3Bet Preflop: 20.00, Hands: 10)

9 players post ante of 100, SB posts SB 500, Hero posts BB 1,000

Pre Flop: (pot: 2,400) Hero has 5 A

fold, UTG+1 raises to 2,000, fold, fold, fold, fold, fold, fold, Hero calls 1,000

Flop: (5,400, 2 players) 3 A 4
Hero bets 2,000, UTG+1 raises to 4,000, Hero calls 2,000

Turn: (13,400, 2 players) 9
Hero checks, UTG+1 bets 6,700, fold

UTG+1 wins 13,400

Have discussed this hand with a friend - and was an interesting conversation. I be happy to explain my logic - but more then anything I would love to know what would you have chosen to do and why?
- what you do preflop?
then assuming did what I did
- what to do post flop?