help with my game please

Good, I am developing a project for the university and I am not very good at programming. I'm doing a top down mobile game and I need the character to move with buttons but I don't want to lose the movement in a grid, could you please help me? I'm desperate

this code;
https://pastebin.com/K6XdYyB9

 

Please, post your code here, using code tags, thank you.

 

There is no way your script will work if the code is translated...

 

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. public enum Direction
5. {
6.     up, down, right, left
7. }
8. public class Movement : MonoBehaviour
9. {
10.     Animator anim;
11.     Vector2 targetPosition;
12.     Direction direction;
13.     public float speed = 5f;
14.     public LayerMask obstacle;
15.     private void Start()
16.     {
17.         anim = GetComponent<Animator>();
18.         targetPosition = transform.position;
19.         direction = Direction.down;
20.     }
21.     void Update()
22.     {
23.         Vector2 axisDirection = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));
24.         anim.SetInteger("Direccion", (int)direction);
25.         if (axisDirection != Vector2.zero && targetPosition == (Vector2)transform.position)
26.         {
27.             if (Mathf.Abs(axisDirection.x) > Mathf.Abs(axisDirection.y))
28.             {
29.                 if (axisDirection.x > 0)
30.                 {
31.                     direction = Direction.right;
32.                     if (!CheckCollision)
33.                         targetPosition += Vector2.right;
34.                 }
35.                 else
36.                 {
37.                     direction = Direction.left;
38.                     if (!CheckCollision)
39.                         targetPosition -= Vector2.right;
40.                 }
41.             }
42.             else
43.             {
44.                 if (axisDirection.y > 0)
45.                 {
46.                     direction = Direction.up;
47.                     if (!CheckCollision)
48.                         targetPosition += Vector2.up;
49.                 }
50.                 else
51.                 {
52.                     direction = Direction.down;
53.                     if (!CheckCollision)
54.                         targetPosition -= Vector2.up;
55.                 }
56.             }
57.         }
58.         transform.position = Vector2.MoveTowards(transform.position, targetPosition, speed * Time.deltaTime);
59.     }
60.     bool CheckCollision
61.     {
62.         get
63.         {
64.             bool col = true;
65.             RaycastHit2D rh;
66.             Vector2 dir = Vector2.zero;
67.             if (direction == Direction.down)
68.                 dir = Vector2.down;
69.             if (direction == Direction.up)
70.                 dir = Vector2.up;
71.             if (direction == Direction.left)
72.                 dir = Vector2.left;
73.             if (direction == Direction.right)
74.                 dir = Vector2.right;
75.             rh = Physics2D.Raycast(transform.position, dir, 1, obstacle);
76.             return rh.collider != null;
77.             return col;
78.         }
79.     }
80. }

sorry