Local Third Person Movement based off Camera Rotation

I am attempting to make a 3rd person character controller using a rigidbody. I need the character to move based off local rotation and position, as I am having the player walk on a spherical planet. I already have the planet gravity down, but I’ve encountered a problem with my movement script.

My camera can be rotated freely on the y axis. I want the player to face the same direction the camera is facing when the player moves. I intended to track the rotation of the camera whilst the player isn’t moving, and then add the angle between the camera’s rotation last time the player moved and the current rotation of the camera to the player’s rotation, in an attempt to accurately rotate the player to where the camera is facing, but the resulting rotation is negligible.

Looking back, I believe it would be better to use the rotation of the camera directly to influence the player’s rotation, but I’m not quite sure how to do that.

“Camera X” is mapped to mouse x.

Any help or tips would be appreciated.

I also would like to make the character face the direction they move when moving with wasd, but that’s a whole other endeavor. Regardless, if you have any pointers on how I could do that, they would also be appreciated.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class BestMove : MonoBehaviour
 {
     // reference Main Camera
     public Transform cam;
 
     Vector3 CinCamRot1;
     Vector3 CinCamRot2;
 
     // The stored difference in camera rotation since the last movement
     float StoredCamRotChange;
     // The difference in camera rotation since the last void Update
     float TempCamRotChange;
 
     float xInput;
     float zInput;
 
     Vector3 moveVector3;
 
     float speed = 4f;
 
     bool strafeToggle = false;
 
     // Start is called before the first frame update
     void Start()
     {
         CinCamRot1 = new Vector3 (0, cam.localRotation.y, 0);
         
     }
 
     // Update is called once per frame
     void Update()
     {
         // CinCamRot2 is the rotation of the camera from THIS void Update.
         CinCamRot2 = new Vector3 (0f, cam.localEulerAngles.y, 0f);
 
         // States that TempCamRotChange is the angle between last void Update's camera rotation and this void Update's camera rotation
         TempCamRotChange = Vector3.Angle(CinCamRot1, CinCamRot2);
 
         // Sets TempCamRotChange to be negative if the camera rotated left
         float CamXinput = Input.GetAxis("Camera X");
 
         if (CamXinput < 0f)
         {
             TempCamRotChange = -TempCamRotChange;
         }
 
         // Updates the StoredCamRotChange float to include this void Update's change in rotation since last void Update
         StoredCamRotChange = StoredCamRotChange + TempCamRotChange;
 
         xInput = Input.GetAxis("Horizontal");
         zInput = Input.GetAxis("Vertical");
 
         // Used to see if the user is attempting to move.
         moveVector3 = new Vector3(xInput, 0f, zInput).normalized;
 
         if (moveVector3.magnitude > 0.1f)
         {
             Move();
         }
 
         // CinCamRot1 is the rotation of the camera from the previous void Update up until this point. (now its the rotation from this update)
         //CinCamRot1 = new Vector3 (0f, cam.localEulerAngles.y, 0f);
         // Sets the TempCamRotChange float back to zero for the next void Update, as it is used to tell the difference between the last Update's rotation and this Update's
         TempCamRotChange = 0f;
     }
 
     void Move()
     {
         //movement
         // Different movement for strafing vs free movement
         if (strafeToggle == true)
         {
             // Strafe Movement
 
             // when I end void Move, I reset StoredCamRotChange to zero, so I need to make sure I set the camera's (x probably) rotation to the same as the player's when I press the lock on button
 
         }
         else
         {
             // Free Movement
 
             // Rotate relative to camera
             transform.Rotate(0, StoredCamRotChange * Time.deltaTime, 0, Space.Self);
 
 
 
             // Move relative to facing direction
             transform.Translate(xInput * Time.deltaTime * speed, 0, zInput * Time.deltaTime * speed);
 
 
         }
 
         StoredCamRotChange = 0f;
         // I moved this from update to here, so now it is the camera rotation from last time the player moved.
         CinCamRot1 = new Vector3(0f, cam.localEulerAngles.y, 0f);
     }
 }