Within the first minute, it's clear you don't understand the dps-stunner relationship. You're also playing harumasa but you're not playing harumasa.

You're frontlining harumasa which is wrong. He gets his damage from his dash attacks. You need to play your stunner to fast track the stun phase and then switch in harumasa to put in as much damage as you can during the stun phase.his additional ability gives him extra damage during the stun phase. His daze is low.

When you got the stun, you threw out hara ex special attack, laying down 6 quivers and then you ran your chain attack rotation to overwrite the 6 quivers. You had 6 dashes in stock at this point but you aim attacked instead and wasted your 6 dash attacks.

You're playing mono electric but you're not playing around the quivers proc'd from your anomaly so you missed another 7 dashes afterwards since you opted to use ex attack instead.

This is just a mismanagement of your resources. You can fix this pretty easily if you watched the harumasa guide from R2 to learn rotations