NL5 hand

Ignition – $0.05 NL (6 max) – Holdem – 4 players
Hand converted by PokerTracker 4

SB: 99 BB (VPIP: 15.38, PFR: 11.54, 3Bet Preflop: 0.00, Hands: 27)
BB: 176.4 BB (VPIP: 26.79, PFR: 21.43, 3Bet Preflop: 0.00, Hands: 59)
CO: 27.2 BB (VPIP: 12.00, PFR: 8.00, 3Bet Preflop: 8.33, Hands: 26)
Hero (BTN): 256.4 BB

SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) BB has A:heart: 2:heart:

Pre Flop: (pot: 1.4 BB) Hero has 6:diamond: A:spade:

fold, Hero raises to 2 BB, fold, BB calls 1 BB

Flop: (4.4 BB, 2 players) 7:heart: 4:spade: 6:heart:
BB checks, Hero checks
Checking back on a wet board, not wanting to inflate the pot with 2nd pair. Was this an auto cbet?

Turn: (4.4 BB, 2 players) 7:club:
BB bets 4 BB, Hero calls 4 BB
Not happy about the bet just trying to get to showdown now

River: (12.4 BB, 2 players) T:spade:
BB checks, Hero checks

BB shows A:heart: 2:heart: (One Pair, Sevens)
(Pre 45%, Flop 37%, Turn 23%)
Hero wins 11.8 BB
So as played did I fish it up?
Q. Cbet flop or is checking back fine?
Q. re raise turn or was calling fine looking to get the hand to showdown.
Q. after BB checks river is a bet good here?