Project_WL/Assets/Script/Mgr/TimeMgr.cs

using System.Collections;
using UnityEngine;

public class TimeMgr : MonoBehaviourSingletonTemplate<TimeMgr>
{
    private void Start()
    {
        DontDestroy();
    }

    public void Set_TimeScale(float delaytime = 0.025f, float _timescale = 0.05f)
    {
        StopCoroutine(nameof(Run_TimeScale));
        StartCoroutine(Run_TimeScale(delaytime, _timescale));
    }

    IEnumerator Run_TimeScale(float delaytime, float _timescale)
    {
        Time.timeScale = _timescale;
        yield return new WaitForSeconds(delaytime);
        Time.timeScale = 1f;
    }
}