Tsukuyomi56
Emblian Royalty
If you have decently levelled up Pokemon with Draining Kiss, it helps with keeping your Pokemon healthy since Zygarde has a similar inflated HP bar as SV Raid Pokemon. Getting all the Green Canari Plushes (you do not need to find all the Colourful Screws, there will be 23 left to find once you get all the bonus effects) helps with “Trainer health”.Man, I thought the Arceus battle was tough. This Zygarde battle is driving me absolutely nuts. I'm about to break my Switch. lol
Other than that it is a matter of observing Zygarde’s attacks and knowing how to dodge them (only needed one try).