Played fine I think. With the bigger bet sizings I prefer to just call as well and allow them to spew off rather than folding out his junk

with no reads on villain this would be a clear fold for me on the river, because the flush arrived.

We have no reads on villain so I gave him a 3bet-range AA-77,AKo-AQo,KQo,AKs-ATs,KQs,QJs. I think this is rather wide.

With this range he should probably bet close to 100% of his hands on the flop.
The 4h changes nothing so I can see him doublebarreling a very wide range.

Arriving on the river we have to ask us: What valuebet do we beat now? exactly 88. --> against his value-range we have a whooping 14% equity. You have to factor in that I gave this unknown villain a rather wide range. Lots of villains would not 3bet as low as 88 or 77 B vs BB. (if I take 88 out your equity goes down to 1%)

So our question is does he have enough bluffs. Actually I do not think so.

I would fold on the river.

I would have also folded river. Pls don't post results, skews all feedback.

I would fold the river simply because it's a street that's very much underbluffed at micros. I can't make many assumptions about ranges and play style with no info imo so I just go with the general population tendencies here.

I'd call down flop and turn and fold river.