That was quite painful to watch as you could've easily beaten that MK. I counted one or two fully charged Aura Spheres, and fully charged ones are essential in this matchup. By not giving yourself a fully charged AS, you effectively limit your own kill options and gave that MK room to make so many mistakes.
STOP AIRDODGING INTO HIM. Stop hiding in your shield, when MK is on the ground and out of range. He got so many free grabs, and here's a hint. If you get punished for something 3 times in a row, you should really stop doing it.
You had many opportunities to cover your *** with the 1 frame FP grab when you would dair close to the ground since that MK was not going to do better punishes such nair or upB.
Either I missed it, but not once did you jab, ftilt, dtilt and kept challenging him in the air when you did not need to.