Losing a game

Something obviously isn’t working, my point is, if you collect 3 “red coins” then unity will display the following text "You Lose!. It is working if you reach the score limit, or the specified amount of score i set up in the code. Here it is. I have already made the tag named “Red” for the red coin, and yet again it isn’t doing what it’s supposed to do.

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class GameManager : MonoBehaviour
{
public Text winText;
public static GameManager instance = null;
public GameObject scoreTextObject;
public GameObject youWinText;
public float resetDelay;

int score;
Text scoreText;
private int Red;

void OnTriggerEnter(Collider other)
{
    if (other.gameObject.CompareTag("Red"))
    {
        other.gameObject.SetActive(false);
        Red = Red + 1;
        
    }

    if (Red == 3)
    {
        winText.text = "You lose!";
        SceneManager.LoadScene("Level 1");

    }

}

void Awake ()
{
    if (instance == null)
        instance = this;
    else if (instance != null)
        Destroy(gameObject);

    scoreText = scoreTextObject.GetComponent<Text> ();
    scoreText.text = "Current Score: " + score.ToString ();
    winText.text = "";
          
}

public void Collect(int passedValue, GameObject passedObject)
{
    passedObject.GetComponent<Renderer> ().enabled = false;
    Destroy (passedObject, 1.0f);
    score = score + passedValue;
    
    scoreText.text = "Current Score: " + score.ToString ();
    if (score >= 2550)
    {
        winText.text = "You Win!";
        SceneManager.LoadScene("Level 2");

    }
    
    

}
    

}

Edit the OnTriggerEnter to

if (other.gameObject.CompareTag("Red"))
 {
     other.gameObject.SetActive(false);
     Red++;
      if (Red > 2)
      {
       winText.text = "You lose!";
       SceneManager.LoadScene("Level 1");
     }
 }

Red = Red + 1; aka Red += 1; aka Red++;

Red++;
seems more elegant than
Red = Red +1;
but that’s just me.