didnt even see D4 as a resource , good find

I loved the move d4

It would be really great if you slowed down the computer analysis after and did it carefully.  It would have been really interesting because there were at least two places where you had draws (one in a 2v1 pawn position where his extra pawn was backwards but your king was far away) and it would have been great to understand your drawing resources.  

It is really hard to be resilient after a blunder, but really, you had  several chances to save but somehow went on tilt and did not really think things through.  Maybe you are not really into rook endgames?  I personally love them...  Alas!

Anyway, thatnks for sharing a tough loss.