Blinds 4 $0.50/$1
CO Player4 $48.50
D Hero $169.34
SB Player1 $211.27
BB Player3 $160.51
Preflop

Hero is BTN $1.50 4
7hQh
1 fold, Hero raises to $2.25, 1 fold, Player3 (BB) raises to $6, Hero calls $3.75

Flop

$12.50 2
3d7d2c
Player3 (BB) bets $11, Hero calls $11

Turn

$34.50 2
3d7d2c 5c
Player3 (BB) bets $33, Hero calls $33

River

$100.50 2
3d7d2c 5c 6d
Player3 (BB) checks, Hero ???

vs reg - no special read
Prelop - I think it is not clear fold, vs this 3bet sizing and we are deep 160bb, call is ok
Flop - standard
Turn - I still have to call, he could have drow quite often ...
River - when I look at my range I have a lot of flushes, and I will not win very often in showdown, mainly against clubs miss drow. So I have to go all in for bluff..., or not?

can I do something differently?

Thank you :)