I'm not sure what is wrong with my script

This is probably some noob mistake, but I have looked over this script a hundred times and I can't see why it doesn't work. It is supposed to record the time between mouse clicks clicking on a dot that moves randomly around the screen and displaying that time in a separate scene. For now I just want to display the time in the debug log and make sure that's working, and also the scene changing process, neither of which work right now. I'm a beginner and any help is appreciated, thanks.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.SceneManagement;
 
 public class Timer : MonoBehaviour {
 
     private List<float> timers;
     private float lastClickTime = -1;
 
 
         private void Start()
         {
             timers = new System.Collections.Generic.List<float>();
         }
 
         private void OnTriggerEnter2D (Collider2D other)
             {
                 timers.Add(lastClickTime > 0 ? Time.time - lastClickTime : Time.time);
                 if (timers.Count == 9)
                 {
                     PlayerPrefs.SetFloat("RTime", 0f + Time.time);
 
             Debug.Log (PlayerPrefs.GetFloat("RTime"));
 
                     SceneManager.LoadScene("GamePanel", LoadSceneMode.Single);
                 }
         }
 }