Playerprefs not saving Guids

So, I have a problem where I am trying to save characters in player prefs. I am trying to save them as a list in one. I want to ID of the character to be a Guid, but it seems to not save it.

Player Structure public class Player { public Guid id;

     public Player(string _name, bool isNew, PlayerData _player)
     {
         if (isNew)
         {
             id = Guid.NewGuid();
         }         
     }

(I have a lot more in my original structure but i am reducing for easier reading) PlayerData structure (for saves)

 public class PlayerData
 {
     public Guid id;
     public PlayerData (Player player)
     {
         id = player.id;
     }
 }

Creation

     public static void CreateCharacter (Player player)
     {
         Text txtResults = GameObject.Find("CharacterCreationResultsText").GetComponent<Text>();
         Debug.Log(player.name);
         PlayerData playerData = new PlayerData(player);
         Debug.Log(playerData.id);
         Saves data = CharacterList();
         // Checks if a character already exists
         if (CheckSumCharacter(playerData, data))
             return;
         // Adds in the character to the list, and saves it.
         data.saves.Add(playerData);
         PlayerPrefs.SetString("characters", JsonUtility.ToJson(data));
         PlayerPrefs.Save();
         txtResults.color = Color.green;
         txtResults.text = "Character Creation Successful!";
         //MainMenu.AddCharacter(player.id);
     }

Saves Structure

 using System.Collections.Generic;
 
 [System.Serializable]
 public class Saves
 {
     public List<PlayerData> saves = new List<PlayerData>();
 }

I am pretty stumped on why this is happening. So either it cant save Guids out of the box, or I am missing something.

EDIT: Actually it seems the normal JsonUtility built into unity isn't saving parsing it.