2.5D Camera follow script

Hello guys, I've been making 2.5D game and I tried to create smooth camera follow script. I want camera to in front of the player, so he can see where he's going. I tried to add Vector 3 movedOffest as the offset for camera to be always in front or behind the player, but it's not smooth, it's realy laggy and I dont know how to fix it.

My script

 using System.Collections;
     using System.Collections.Generic;
     using UnityEngine;
     
     public class CameraFollow : MonoBehaviour {
     
         [Header("Camera Settings")]
         [SerializeField] private Transform target;
         [SerializeField] private float smoothSpeed;
         [SerializeField] private Vector3 offset;
         [SerializeField] private Vector3 movedOffest;
     
     
         private void Awake() {
             target = GameObject.FindGameObjectWithTag("Player").transform;
         }
     
         private void FixedUpdate() {
             Vector3 desiredPosition = target.position + offset;
             Vector3 smoothedPosition = Vector3.Slerp(transform.position, desiredPosition, smoothSpeed);
     
             if (Input.GetAxis("Horizontal") < 0) {
                 transform.position = smoothedPosition - movedOffest;
                 Debug.Log("Left");
             } else if (Input.GetAxis("Horizontal") > 0) {
                 transform.position = smoothedPosition + movedOffest;
                 Debug.Log("Right");
             } else if (Input.GetAxis("Horizontal") == 0) {
                 transform.position = smoothedPosition;
             }
         }
     }