Restart manager dosent work properly

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C#

Unity

i am trying to code a death script that restarts the scene when you die, this is my script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class PlayerDeath : MonoBehaviour
{
    [SerializeField]
    string Player2Tag;

    void Update()
    {

    }

    private void OnCollisionEnter(Collision collision)
    {
        if (collision.collider.tag == Player2Tag)
            SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }
}

i have set the string Player2Tag as Player2 and for some reason the restart activates when a player with the tag Player (without the number 2) it still activates.
can some one help me?

What I have tried:

i have tried this changing the tag, didn't work
untaged objects don't activate the restart,
this secondey script is for the other tag i have tried:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class RestartManager : MonoBehaviour
{
    [SerializeField]
    KeyCode keyRestart;
    [SerializeField]
    string PlayerTag;

    void Update()
    {
        if (Input.GetKey(keyRestart))
            SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    private void OnCollisionEnter(Collision collision)
    {
        if (collision.collider.tag == PlayerTag)
            SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }
}