Nioh build review Wotw

Would you guys be so kind as to review my build? https://youtu.be/7OArrleRWJs

Im in Wotw and I'm having trouble going through the levels. My damage seems very low. The omnyo magic lasts like a few seconds on red mobs it seems.

What do I focus on changing next to improve?

Also what is a good combo attack with the odachi? Moonlit snow is so hard to use as the mob recovery time and their attacking is so fast I can hardly pull it off. Mostly I'm in low stance doing dash hit dash hit attacks that do little to no damage. I did ok in the first region but now in the second and third I am struggling a bit. Thank you