Ok, the first thing is to open Masq/Silver over Masq/Chapel. With Masq out there you don't want to play with a chapelled down deck because you'd be forced to pass good cards all the time. Masq's trashing itself is sufficient and it allows you to build while doing so.
Given that you opened Masq/Chapel, you absolutely have to play Chapel on your T3 Ch,Msq,Hvl,2xCpr hand.
Apart from that your opponent had a great open and didn't make any big mistakes, so it's not surprising that he won the Knight split and then there's just nothing you can do besides looking for the resign button.