Some of the stuff I see is that you attacking a guy with fortitude with c1. Forgot what emblem is it which won't work cause of the advance. You should have just done a jump charge while he is doing c3, which will stop his combo.
Also, I noticed you like to do c5 a lot. Not sure if c5 has element but if it does probably the one for your War Sword is wind. C1 thunder atk works well with is as well cause if they are blocking you can probably stun them with it from behind. Also, good to use your C1 when you are getting ganked.
Fire element in my opinion is not the best element for your build since you don't have much musuo either