want to make a fixed rotation speed in Lerp no matter what the angle is

I'm working on a 2d Project and I'm New to rotations and Quaternoin,I want to make a fixed rotation speed in Lerp no matter what the angle is. Here is my code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class enemyScript : MonoBehaviour
 {
     Rigidbody2D rb;
     [SerializeField] GameObject Bullet, Player, FireSpot;
     [SerializeField] float speed, Duration;
     Vector3 Direction;
     Quaternion Position;
     float time = 0;
     float Dot;
 
     void Start()
     {  
         rb = GetComponent<Rigidbody2D>();
 
         Position = transform.rotation;
         Dot = Mathf.Acos(Vector3.Dot(Vector3.right, Direction)) * Mathf.Rad2Deg;
 
     }
 
     void FixedUpdate()
     {
         transform.Translate(-Vector3.right * speed * Time.deltaTime);
 
 
         if (time > 1)
         {
             Position = transform.rotation;
             Dot = Mathf.Atan2(Direction.y, Direction.x) * Mathf.Rad2Deg;
             time = 0;
             print(Duration);
         }
 
 
         time += Time.deltaTime * Duration;
 
         Direction = Player.transform.position - transform.position;
         Debug.DrawRay(transform.position, Direction, Color.cyan);
         Direction.Normalize();
 
 
         transform.rotation = Quaternion.Lerp(Position, Quaternion.Euler(new Vector3(0, 0, Dot - 180)), time);     
     }        
 }