Supreme King Z-arc vs kashtira bystial

I should have lost this duel, no question about it, dude had 2 ways to do it and missed both times

Deck list:
odd-eyes arc pendulum dragon
3x ash blossom
1x nibiru
3x wisdom-eye magician
3x performapal skullcrobat joker
3x double iris magician
3x supreme king dragon darkwurm
1x supreme king dragon lightwurm
1x astrograph sorcerer
1x supreme king gate zero
3x supreme king gate magician
2x odd-eyes revolution dragon
1x harpies feather duster
3x dragon shrine
3x pendulum call - a bit counter intuitive since you have to destroy cards to get to your main plays
1x tttalents
1x ttthrust
2x called by
1x wings of light
2x imperms
1x soul of the supreme celestial king

extra deck
1x odd-eyes vortex dragon
1x starving venom fusion dragon
1x supreme king zard
1x odd-eyes arc dragon
1x crystal wing synchro dragon - any of them will do
1xsupreme king dragon clearwing
1x odd-eyes absolute dragon
1x supreme king dragon dark rebellion
1x AA-Zeus
1x odd-eyes rebellion xyz dragon
1x electrumite
1x I:P:
1x S:P:
1x exceed the pendulum
1x apollusa