5k vs 5k, I lost by 0.5 point. Please anyone can hep-me?

I lost by 0.5 points, please can anyone give me a review?

I’m would like a review in special, at how to play against a reduction that start with move 46.
I think that the opponent reduced so much with this move, I think that I could do better.

I’m black.

Please anyone stronger can help-me with a review?