Design Patterns Unity3D? [closed]

Good morning,

I started working with Unity3D , everything was going well, until I saw my codes become GIANT, so I decided to separate everything right into a% of "own"%, I created three layers to separate the design pattern . scripts , to model the Model .

public class PlayerModel {
    public GameObject PlayerGameObject { get; set; }

    public string Name { get; set; }
    public int Life { get; set; }

    public PlayerMode() { 
        this.PlayerGameObject = GameObject.FindGameObjectWithTag("Player"); 
    }
}

public class PlayerService {
    private PlayerModel playerModel;

    void recoveryLife(int quantity) {
        playerModel.Life += quantity;
    }

    public PlayerService(PlayerModel _playerModel) {
        this.playerModel = _playerModel; 
    }
}

public class PlayerController : MonoBehaviour{
    public GameObject player;
    public PlayerModel playerModel;
    public PlayerService playerService;

    void Start() {
        playerModel = new PlayerModel();
        playerModel.Name = "Personagem";
        playerModel.Life = 100;

        playerService = new PlayerService(playerModel);
    }
}

GameObjects , to do the actions of Services (attack, receive damage, walk, etc) and a GameObject , which makes the call of both. However, to my understanding, Controller can be aware of another controllers , however the model and the service can only know about themselves?

In short, would anyone have some tutorial, an example of Design Pattern for Unity?

Thank you!