This is a paid asset, but now you can download 100 Retro LUTs Pack 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
100 Retro LUTs Pack v1.0
100 Retro LUTs Post Processing Pack is a collection of high-quality, fast, customizable post-processing effects and color adjustments for Unity.
Quickly create an incredible Cinematic film grade using these LUTs with only a few clicks. Color-grading LUTs allow you to create beautiful, Cinematic film tones for your games.
Every LUTs has been designed to look fantastic with a range of scenes. In many instances, you will be able to get a great result in an instant.
Within a few clicks, you can add amazing effects to your projects! It is so simple!
Can be easily adjusted to fit your project
This bundle comes with an extended commercial license, which means you can use these effects over and over to create stunning designs for yourself and your clients!
High-quality LUTs that allows you to color correct your projects in a few clicks