Vector2 not being recognised?

Hi all,

Major beginner so i apologise if this seems painfully obvious.

I'm following a tutorial to get a player sprite to move around, they have used a Vector2 with no issues, however when I typed it in visual studio doesn't recognise it. I have followed the tutorial all the way and have this code. The only thing i have found is maybe I am not using the correct namespace but i appear to be using the same ones as the tutorial, so I'm all confused now.

Any and all help is appreciated.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerController : MonoBehaviour
 {
     public float moveSpeed;
 
     public bool isMoving;
     private Vector2 input;
 
     private void Update()
     {
         if (!isMoving)
         {
             input.x = input.GetAxisRaw("Horizontal");
             input.y = input.GetAxisRaw("Virtical");
 
             if (input != Vector2.zero)
             {
                 var targetPos = transform.position;
                 targetPos.x += input.x;
                 targetPos.y += input.y;
 
                 StartCoroutine(Move(targetPos));
             }
         }
     }
     IEnumerator Move(Vector3 targetPos)
     {
         isMoving = true;
 
         while ((targetPos - transform.position).sqrMagnitude > mathf.Epsilon)
         {
             transform.position = Vector3.MoveTowards(transform.position, targetPos, moveSpeed * Time.deltaTime);
             yield return null;
         }
         transform.position = targetPos;
 
         isMoving = false;
     }
 }