It was a canny save to be fair to their goalkeeper. However, if Mayenda had sorted his feet out earlier and opened up his body, he could have slot it into the opposite corner thus giving the 'keeper no chance. Hopefully, with experience and confidence, that will come more naturally to him.
Whether it's just not his game or it's a matter of confidence, he gets bullied in one on one battles too easily. He's not a small lad and he needs to impose himself more on the opposition. I wouldn't say he got bullied but he looked lightweight in those situations when he was up against defenders one on one.
Not a terrible performance from him and I can see the potential in him but he's not ready to lead the line alone at this level yet.