Call turn, fold river, literally any draws complete which is a bigh junk of his leading range .

Playing 73 off is never to be played even HU IP.

It's hard to say readless how we should construct our flop raising range against an unknown and an unknown's donking range. Here I mean we have a hand that does need some protection, but we are also going to be clueless on so many bad turns when we get called. So I would probably elect to raise the flop with a slightly more polar range here and opt to just call with this hand. It's close though. I think 87 is a raise. 83 might be a raise as well. Raising is not a large mistake though I don't think. As a self preference I like to air on the side of calling when I don't know the ranges and polarize more until I can more confidently make a better decision.

I think as played it's fine but the river should be a fold. It's almost impossibe for us to be good here unless he is spewing off with god knows what. Our range as well is so protected on this runout that we might be overcalling if we call this hand. We should probably resort to a more balanced river calling range here since villain's donking and continuing ranges are completely unknown to us. We have a lot of straights and flushes to make up that range.

a) I think you are overcalling the river if you call this hand
b) It's pretty much impossible for him to not have you bet everything gets there, it's a good runout for his range.
c) It's important to realize that you called a pot bet on the flop and a pot bet on the turn which leads to that ranges should be more narrow than if he used a "standard" size.

Flop: I like raise , mainly vs a fish ! coz lot of value vs any 7x, 8x, SD, FD . But call is ok too, keep his bluffing range.
Mixed strategie on the flop is good.

Turn : As played , Call.

River : He doesnt value any 1pair hand, he can bet any 2pair + ==> we beat almost 0 hand of his value range.

That bring us to only 1 question in that spot : Is he bluffing more than 27 % ?
Would be surprise to see him bluffing more than 5 % here.
Answer is no. Decision is not close.
Fold.
Easy game.