Line check tptk oop

Merry Christmas and have a happy new year everyone!

20plo - clubgg - min 35 vpip

Flop x/c is standard? Or we were supposed to cbet?
Turn we weren't supposed to donk after giving up lead right?

Hero (UTG): 100 BB
MP: 217.05 BB (VPIP: 50.00, PFR: 11.76, 3Bet Preflop: 0.00, Hands: 43)
CO: 98.4 BB (VPIP: 50.41, PFR: 20.33, 3Bet Preflop: 11.11, Hands: 164)
BTN: 86.85 BB (VPIP: 16.67, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 8)
SB: 208 BB (VPIP: 36.36, PFR: 27.27, 3Bet Preflop: 20.00, Hands: 14)
BB: 187.65 BB (VPIP: 61.86, PFR: 21.65, 3Bet Preflop: 15.38, Hands: 122)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A♦ T♦ 9♦ 8♥

Hero raises to 3.5 BB, fold, CO calls 3.5 BB, fold, SB calls 3 BB, fold

Flop: (11.5 BB, 3 players) 8♣ 5♦ 2♠
SB checks, Hero checks, CO bets 8.6 BB, SB calls 8.6 BB, Hero calls 8.6 BB

Turn: (37.3 BB, 3 players) 8♦
SB checks, Hero checks, CO checks

River: (37.3 BB, 3 players) Q♥
SB bets 27.95 BB, Hero calls 27.95 BB, fold