Missed Nutflushdraw am River - Checkraise?

Haha I'm sorry I accidentally posted this in the wrong forums (English, not German).

You can still see the hand.

I want to hear what you think of the checkraise on the river. Pros and Cons. Your conclusion. But not just "obv bad move". That doesn't help.
For example: "Limit is too low, people will shove any A". Or: "Villain can't hold Kd, he will fold smaller Flushes".

The hand is from yesterdays session and I'm not entirely sure what the right way to play the river is.

Villain was relatively unknown to me.

I guess it is an obvious XF without any further move. Why? 1) Your opponent is unknown, you don't know how will he react vs XR river.
2) The board is paired. Will you opponent fold Fulhouse? Never
3) Will your opponent fold Flush at this low limit? Rarely, but you need to know vs whom do you play.
4) The main note : your opponent bets POT OTR. it is definitely kind of value hand, so you are burning money with your XR.

To be your call profitable you need him to fold 60 % otr to be your call OK

So, if he has something like this otr

77,55-44,AJs-ATs,A7s-A2s,QdJd,QdTd,JdTd,Qd9d,Jd9d,Td9d,Qd8d,Jd8d,Td8d,9d8d,Qd7d,9d7d,8d7d,8d6d,7d6d,7d5d,6d5d,6d4d,5d4d - 37 combos

and folds everything but FH - 13 combos left, it is still "so so". But he might check the low flushes and some of the trips combos behind though, so I'm rather folding.

Do not do this when deep.
Your xr is small size.

When villain calls flop and turn and almost pots the river on that board, I wouldn't try to check/raise him without specific info (that he is bluffing with that sizing). He will most often have a hand that beats us and doesn't fold vs raise. I would check/fold the river by default.

We cannot raise OTR when turn with Ace is called. We should not bet and fold vs any bet here as we do not have much FE

Alright I can't argue vs that. You guys are right! I guess I overestimated the value of the Kd block. Thanks for the input Upvotes were given!

Would the situation be different if the river was a brick instead of the 2nd A?

Well, you block the flush but there are still better hands. And when you block something it doesnot mean he cannot have it. Just it is less likely....
The 2d gives us the nut flush. ..

If the river was brick I would prefer betting myself otr and not x/r. If the board is not paired here it means he has less nut / strong combos and you will have more FE.