Hand was played in live game so I don't remember all the details.

Hero is BB, villain #1 is loose-aggro, villain#2 is loose-balanced (reasonably aggressive) player. Hero is seen as a tight and aggressive player. All players have 150 BB stacks.

Hero is dealt 5d8d.

Preflop it is limped by everybody and the pot is 6 BBs.

Flop: 3d9cTd
Hero bets 6 BB, 3 callers (pot is 30 BBs)
Turn: Qd
Hero bets 20 BB, viallains #1 and #2 call, 4th player folds. (pot is 90 BBs, players have approx. 130 BBs)
River: 2c

Hero does what and why? How do we extract value from our hand? That is, does our hand have a value? Should we bet, and if yes how much and why?