Tilt object based on movement and direction

Hi Together,

i am working on a Top-Down Game and i try to implement a kind of gliding functionality. If i jump off a cliff my character starts gliding and slowly sinking. The character moves automatically forward and he is flying in the direction of the joystick. When i do nothing the player is flying straight forward to the actual facingDirection. What i want is that the character tilts left or right if i change the direction. The stronger the direction change is the stronger the tilt. Like in a short hike (a game everyone should try ;) ).

But i just dont get it how i could do that. Maybe someone can give me a hint. Here my actual code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class MovementController : MonoBehaviour
 {
     private float movementSpeed;
     public float baseSpeed = 200.0f;
     public float Sensitivity = 5.0f;
     public float rotationSpeed = 5.0f;
 
     [HideInInspector] public Vector3 movingDirection = Vector3.zero;
     private Vector3 horizontalDirection;
     private Vector3 verticalDirection;
     private Quaternion facingDirection;
 
     private Rigidbody rigidbodyPlayer;
     private Vector3 right, forward;
     public float multiplier = 10.0f;
 
     void Awake()
     {
         rigidbodyPlayer = GetComponent<Rigidbody>();
     }
 
     private void Start()
     {
         forward = Camera.main.transform.forward;
         forward.y = 0;
         forward = Vector3.Normalize(forward);
         right = Quaternion.Euler(new Vector3(0, 90, 0)) * forward;
 
         facingDirection = transform.rotation;
     }
 
     void Update()
     {
         GetMovementDirection();
     }
 
     void FixedUpdate()
     {
         MoveCharacter();
     }
     
     //Get the Input for the Movement
     private void GetMovementDirection()
     {
             horizontalDirection = right * Input.GetAxis("Horizontal");
             verticalDirection = forward * Input.GetAxis("Vertical");
             
             movingDirection = Vector3.Normalize(horizontalDirection + verticalDirection);
 
             //Speed of movement multiplied by sensitivity for better control
             movementSpeed = Sensitivity * (Mathf.Clamp01(new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical")).sqrMagnitude));
     }
     //Move the character according to GetMovementDirection
     private void MoveCharacter()
     {
         //Automatic movement and direction change
         rigidbodyPlayer.AddForce(transform.forward * baseSpeed);
         rigidbodyPlayer.MovePosition(rigidbodyPlayer.position + movingDirection * Time.fixedDeltaTime);
 
         
     
         //Smooth Rotation to moving direction
         if (movingDirection != Vector3.zero)
         {
             facingDirection = Quaternion.LookRotation(movingDirection);
         }
 
         transform.rotation = Quaternion.Slerp(transform.rotation, facingDirection, Time.deltaTime * movementSpeed);
     }
 }