STR

V is a 21/18 pretty standard seeming reg over a small sample.

Doesn't really tell me much about V's range as this board is so dry could be floating with a number of broadway over cards with one or two hearts as well as all pairs 77+

Don't see any reason to raise but definitely can't fold especially with a redraw to the king high flush. His bet sizing looks quite weak as I have only shown strength this hand, if he turned a flush or has a full house it would make sense to bet slightly larger, looks like a blocking bet. That read isn't so strong and doesn't really narrow v's range but has me leaning towards AJ, AQ, 99+ with one heart.

Probably the worst river card short of an offsuit ace. I think quite a few players would bet a Q+ flush for value, IMO many players would c/c lower flushes especially with paired board. The Q also means its unlikely that 99-JJ is leading this river. V's range in my mind seems AhJx, AhQx most of the time, QQ, 66, 22 rarely and a small percentage of bluffs. Saying that pot odds are quite good at 3 to 1 so only need to be right 25% of time.

Villain is extremely tight 12/6 but went super aggro in a number of hands post flop

This is where I think I may have made a mistake. x/c for pot control is probably the best play. My reason for cbet was to get value from a large portion of v's range that flats squeeze preflop. KQ,QJ,88-JJ. I end up getting priced into the small check raise and it allows for V to jam often on the turn due to SPR. Even without a turn jam given size of pot already it's starting to look like stacks are getting in by the river which isn't really optimal for just top pair.

At this stage I'm pretty sure I'm dead in the water. The villains likely range in my mind seems to be KK, AA, QQ, 77, 66 and the occasional AK going crazy. The fact that V flatted squeeze narrows his range to 77, 66 a pretty large portion of the time.