How to write cheats for Unity-Games in C# UNITY?

Question

C++ / C#

My friend writes cheats for the game Rust (Piratka) (Unity) says you need to learn C # Unity, I looked at a couple of lessons and tutorials there they teach how to write GAMES on Unity and I don’t understand how to learn software in C # Unity to write when they teach there "Now let's add lighting into our game, let's draw graphics .. So, let's make the player move"

Answer 1

Using Unity, you can make plug-ins (add-ons) for some games written with Unity.
in the plugin, you can implement cheat logic - for example, make the player move faster or run / shoot through walls or see hidden objects, etc.

Answer 2

says you need to learn C # Unity, I looked at a couple of lessons and tutorials there they teach how to write GAMES

He speaks correctly. And what did you want? Knowing nothing to write cheats?

I don't understand how to learn to write software in C# Unity

And you don't need to. All who write software in order to spoil the gameplay for the game they bought are clumsy programmers. I don't respect these people.