Although there is no single way to organize a Unity project, here is a recommendation.
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ββ Assets
β ββ !src
β β ββ Art
β β β ββ Animations
β β β β ββ 2DAnimations
β β β β β ββ Animators
β β β β β ββ Clips
β β β β ββ
β β β β ββ 3DAnimations
β β β β β ββ Animators
β β β β β ββ Clips
β β β β ββ
β β β ββ
β β β ββ Materials
β β β ββ Models
β β β ββ Sprites
β β β ββ Textures
β β ββ
β β ββ Code
β β β ββ Scripts
β β β ββ Shaders
β β ββ
β β ββ Data
β β ββ Level
β β β ββ Prefabs
β β β ββ Scene
β β β β ββ Level
β β β β ββ Others
β β β ββ
β β β ββ UI
β β ββ
β β ββ Media
β β β ββ Audio
β β | ββ Video
β β ββ
β ββ
β ββ Misc
β ββ Editor
β ββ Resources
β ββ Settings
β ββ Third-Party
β β ββ Art
β β ββ Media
β β ββ Scripts
β ββ
ββ
I hope this helps you organize your projects in Unity.