Resolved Rigidbody2D movement problems

I've made a movement script that uses a rigidbody2d component to move, and so far everything has been working fine, except for changing directions. I tried to implement the movement to have an acceleration as opposed to having the movement be instant, but I've noticed that whenever the player tries to change directions on the ground, the player will just stop moving for a short period of time. However the movement works completely fine in the air, and does exactly what I want it to do so it shouldn't be a problem with the script:

Code (CSharp):

1. public class Movement : MonoBehaviour
2. {
3.     [SerializeField] private KeyCode left;
4.     [SerializeField] private KeyCode right;
5.     [SerializeField] private KeyCode jump;
6.     [SerializeField] private float gravity;
7.     [SerializeField] private float speed;
8.     [SerializeField] private float jumpForce;
9.     [SerializeField] private float inertia;
10.     [SerializeField] private LayerMask layer;
11.     [SerializeField] private Transform groundPoint;
12.  
13.     private Vector2 moveVector = Vector2.zero;
14.  
15.     private Rigidbody2D rb;
16.  
17.     private float xMove;
18.     private float yMove;
19.     private float jumpRememberTimer;
20.     private float jumpRememberTime = 0.1f;
21.  
22.     private bool isGrounded;
23.     private bool hasJumped;
24.  
25.     private void Start()
26.     {
27.         rb = GetComponent<Rigidbody2D>();
28.         Physics2D.gravity = Vector2.zero;
29.     }
30.  
31.     private void Update()
32.     {
33.         isGrounded = Physics2D.OverlapBox(groundPoint.position, new Vector2(1, 0.1f), 0, layer);
34.         Debug.Log(isGrounded);
35.         //horizontal movement
36.         if ((Input.GetKey(left) && !Input.GetKey(right)))
37.         {
38.             xMove -= speed * Time.deltaTime * inertia;
39.         }
40.         if ((Input.GetKey(right) && !Input.GetKey(left)))
41.         {
42.             xMove += speed * Time.deltaTime * inertia;
43.         }
44.         if (!Input.GetKey(left) && !Input.GetKey(right))
45.         {
46.             xMove -= moveVector.x * Time.deltaTime * inertia;
47.         }
48.  
49.         //speedchecks
50.         if (xMove > speed)
51.         {
52.             xMove = speed;
53.         } else if ( xMove < -speed)
54.         {
55.             xMove = -speed;
56.         }
57.  
58.         moveVector.x = xMove;
59.  
60.  
61.         //jumping
62.         if(Input.GetKeyDown(jump) && !hasJumped && isGrounded)
63.         {
64.             yMove = jumpForce;
65.             hasJumped = true;
66.             jumpRememberTimer = 0;
67.         }
68.  
69.         //resetting has jumped
70.         jumpRememberTimer += Time.deltaTime;
71.         if(jumpRememberTimer > jumpRememberTime && isGrounded)
72.         {
73.             hasJumped = false;
74.         }
75.  
76.         //gravity
77.         yMove -= gravity * Time.deltaTime;
78.         if (yMove < -10f && isGrounded)
79.         {
80.             yMove = -10f;
81.         }
82.  
83.         //assign values
84.         moveVector = new Vector2(xMove, yMove);
85.        
86.         //applying the movevector
87.         rb.velocity = moveVector;
88.     }
89. }

I have also noticed that as I increase the inertia value, the time that the player freezes shortens.

 

I solved the problem by making a new physics material with 0 friction.