DAMAGED CITY:

City
https://assetstore.unity.com/packages/3d/environments/urban/japanese-matsuri-city-35619

Vehicles
https://assetstore.unity.com/packages/3d/vehicles/land/low-poly-vehicles-pack-26707
https://assetstore.unity.com/packages/3d/vehicles/land/sports-car-model-and-shader-15813

Rubble
https://assetstore.unity.com/packages/3d/props/exterior/rubble-and-debris-modular-set-free-sample-118763

Fire
https://assetstore.unity.com/packages/vfx/particles/fire-explosions/flames-of-the-phoenix-46176