Vector3 Issues - Not Able To Solve Constructor issue

Alright, I've done my research into this issue, examined similar scripts and tested it, but I've hit an error with the Vector3 doesn't have a visible constructor. I found information that this is simply because I need to construct, that is, specify the property.

I believe I've hit a property I cannot specify, for some reason. I'm sure the error may be in the property lookDir (look direction), but no matter how much tampering, I cannot get Vector3 to accept it. The error specifically is BCE0024: The type 'UnityEngine.Vector3' does not have a visible constructor that matches the argument list '(UnityEngine.Vector3)'

with conflict with the line: myTransform.rigidbody.velocity = Vector3(lookDir.normalized MoveSpeed Time.deltaTime);

The script works perfectly if lookDir is replaced with transform.forward (but doesn't work fine in-game), so lookDir is certainly the issue.

If someone can offer advice on how to address the issue, and if kindly enough, offer a correction entirely, it would be much appreciated.

The actual script is below:

 var Player : Transform;
 var MoveSpeed = 4;
 var MaxDist = 10;
 var MinDist = 5;
 var myTransform : Transform;
 var distance = Vector3.Distance(Player.position, transform.position);
  
  
 function Awake(){
     myTransform = transform; 
 }
 
 function Update () 
 {
     if (distance <2f) 
     {
     
     var dist = Vector3.Distance(Player.position, myTransform.position);
  
     var lookDir = Player.position - myTransform.position;
 
         transform.LookAt(Player);
  
         if(Vector3.Distance(transform.position,Player.position) >= MinDist){
         
           myTransform.rigidbody.velocity = Vector3(lookDir.normalized * MoveSpeed * Time.deltaTime);
          
          if(Vector3.Distance(transform.position,Player.position) <= MaxDist)
              {
    }
 }
 }
 }