I think we found it!!!
https://play.pokemonshowdown.com/battle-gen9nationaldexubers-2401046315-80af5q5s99js4w4m9slavrflvti2lr9pw
We ditched Tapu Lele for a solid defensive core (fire water grass), and it is working very well atm. (also we decided to not use Landorus-Therian because there is ice...