What you try to represent your opp on rainbow flop after calling his raise pf? sets? straight?

Your check raise really weird. Coz u will never raise nuts in that flop coz u have no reason for it. So you show him bluff or pair like 5 or 6. I dont think 3 barrel on that board really good, your range looks caped.

sorry for my eng

I like the check-raise on a dry board like this but I dont like the way you played OTT and OTR. Think about BTNs range for calling your check-raise OTF. Yes, he will float you with overcards some of the time but he will mostly have overpairs, sets, pair+draw or just a OESD. This turn changes very little and he will continue to call you with a lot of these holdings. The overbet OTR has to work way to often to be profitable vs his range IMO. It also polarizes your range and looks very much like a desperate attempt to buy the pot otr. A competent opponent will know that you probably would bet somewhere arround 50-70% pot w nuts here. 

Just check-fold OTT.

If you are going to bluff this river, i don't think you need to overbet it. Think about what you are trying to get him to fold. I don't think his folding range changes enough to merit a $42 bet instead of say a $21 bet.

i like to 3b pre, but call is fine. overall I think your idea makes no sense, ok you block 22 but you are really overbluffing this spot having no good card to block 7x so this is not a good idea. just x/c, x/f and life goes on

the river is only going to help him in his calling range. 

So since he calls turn u should definitely c/f river. U can slow down after flop also and it is fine.

Your bottom pair is strong enough to call on the flop, especially with your A kicker and BDFD.
As played, I don't like it at all.

His flop b/c range is full of hands like 78/77/88 etc., and you don't block anything.