['I was expecting to get a better grade on my last exam, but alas it was lower than I had hoped.', 'Oh no did you research what happened for it to be like that?', 'Yeah I made some silly mistakes in my answers. I should have studied a bit harder I suppose.']
I believe you will do better next semester, cheer up buddy
I was expecting a higher grade on my last exam, but unfortunately it was lower than I had hoped.