NL50 KK vs 4bet flat tag

Poker Stars $50.00 No Limit Hold'em - 5 players - View hand 1506252
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BB: $143.27
UTG: $77.77
CO: $67.38
BTN: $35.44
Hero (SB): $52.24

Pre Flop: ($0.75) Hero is SB with K K
3 folds, Hero raises to $1.50, BB raises to $4.50, Hero raises to $11, BB calls $6.50

Flop: ($22.00) 3 A 6 (2 players)
Hero bets $7.00, BB raises to $24.39, Hero raises to $41.24, BB calls $16.85

Turn: ($104.48) 5 (2 players)

River: ($104.48) T (2 players)

BB 27/14/2.5/24 3bet 4%, fold to 4bet 20% 5k hand

reads:

SB flat BU K7s, donk 3/4 738hh , b 3/4 PSB 2c, b 1/2 Qd - turns pair into bluff
donk dry flop, c/c blank turn, c/f blank river

spielt jemand den flop anders? maybe c/c any street oder c/shove ?

Board: A♦3♥6♥
       Equity     Win     Tie
SB     40.64%  39.14%   1.49% { KsKc }
BB     59.36%  57.87%   1.49% { KK-JJ, AsAc, AQs, KhQh, AQo+ }