This is a paid asset, but now you can download Realistic Mesh Deformation 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
Realistic Mesh Deformation v1.0
Realtime mesh deformation on collisions. Meshes can be selected individually, or let the script takes all of them. Customizable deform settings.
Realistic Mesh Deformation has the same deformation methods used in Realistic Car Controller. More customizable and more stable version. Can be used on any object, but wireframe topology must be in good condition.
WebGL, Android Demo
Just attaching it to the gameobjects you want to deform would be enough!
[Features]
Realtime mesh deformation,
Selecting specific meshes,
Deforming & repairing with code,
Lightweight and performance friendly,
Customizable settings,
Commented scrips assisted with editor extensions,
API.