This is a paid asset, but now you can download ToonSketch Water for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
ToonSketch Water v1.01
ToonSketch Water is a non-photorealistic shader pack comprising a material shader that simulates water with a non-photorealistic toon style…
ToonSketch Water is a module in the ToonSketch series of shader assets.
Other modules available are:
ToonSketch Core
Or you can also get the complete ToonSketch series at a discounted price by purchasing ToonSketch Complete…
The shader supports toon shading with customisable ramp textures and is built on Unity’s standard surface shader library and so fully supports dynamic and baked lighting, global illumination, and ambient/spherical harmonic lighting…
The shaders currently support Unity’s Built-in Renderer, with URP support currently not provided.
For more details and examples check out the documentation.