My character keeps flipping with flip script

Here is the script:

It looks like this:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Kontrola : MonoBehaviour
{
[SerializeField] private LayerMask platformsLayerMask;
[SerializeField] private Transform pfDoubleJumpEffect;
[SerializeField] private Transform pfAirJumpIcon;

public float moveSpeed = 10f;

private Rigidbody2D rigidbody2d;
private BoxCollider2D boxCollider2d;
private int airJumpCount;
private int airJumpCountMax;
private List<GameObject> airJumpIconGameObjectList;

[Header("Wall Jump")]
public float wallJumpTime = 0.2f;
public float wallSlideSPeed = 0.3f;
public float wallDistance = 0.5f;
bool isWallSliding = false;
RaycastHit2D WallCheckHit;
float jumpTime;

bool isFacingRight = true;

private void Awake()
{
rigidbody2d = transform.GetComponent<Rigidbody2D>();
boxCollider2d = transform.GetComponent<BoxCollider2D>();
SetAirJumpCountMax(1);
}

private void Update(){
if (IsGrounded())
{
ResetAirJumpCount();
}
if (Input.GetKey(KeyCode.UpArrow))
{
if(IsGrounded())
{
float jumpVelocity = 12f;
rigidbody2d.velocity = Vector2.up * jumpVelocity;
}
else if(isWallSliding && Input.GetKey(KeyCode.UpArrow))
{
float jumpVelocity = 12f;
rigidbody2d.velocity = Vector2.up * jumpVelocity;
}
else
{
if(Input.GetKeyDown(KeyCode.UpArrow ))
{
if(airJumpCount < airJumpCountMax)
{
Instantiate(pfDoubleJumpEffect, transform.position, Quaternion.identity);
float jumpVelocity = 12f;
rigidbody2d.velocity = Vector2.up * jumpVelocity;
SpendAirJump();
}
}
}
}

HandleMovement();
}

private void SetAirJumpCountMax(int airJumpCountMax)
{
this.airJumpCountMax = airJumpCountMax;
airJumpIconGameObjectList = new List<GameObject>();
for (int i = 0; i < airJumpCountMax; i++)
{
Transform airJumpIconTransform = Instantiate(pfAirJumpIcon, transform);
airJumpIconTransform.localPosition = new Vector3(-0.15f, 1f * i, 0.0009f);
airJumpIconGameObjectList.Add(airJumpIconTransform.gameObject);
}
}

private void SpendAirJump(){
airJumpCount++;
for (int i = 0; i < airJumpCount; i++)
{
airJumpIconGameObjectList.SetActive(false);
}
}

private void ResetAirJumpCount()
{
if(airJumpCount > 0){
airJumpCount = 0;
for (int i = 0; i < airJumpIconGameObjectList.Count; i++)
{
airJumpIconGameObjectList.SetActive(true);
}
}
}

private bool IsGrounded()
{
RaycastHit2D raycastHit2d = Physics2D.BoxCast(boxCollider2d.bounds.center, boxCollider2d.bounds.size, 0f, Vector2.down, .4f, platformsLayerMask);
return raycastHit2d.collider != null;
}

void HandleMovement()
{
float moveSpeed = 7f;
if (Input.GetKey(KeyCode.LeftArrow))
{
rigidbody2d.velocity = new Vector2(-moveSpeed, rigidbody2d.velocity.y);
isFacingRight = false;

Flip();

}
else
{
if (Input.GetKey(KeyCode.RightArrow))
{
rigidbody2d.velocity = new Vector2(+moveSpeed, rigidbody2d.velocity.y);
isFacingRight = true;

Flip();
}
else
{
rigidbody2d.velocity = new Vector2(0, rigidbody2d.velocity.y);
}
}

}

void FixedUpdate(){

if (isFacingRight)
{
WallCheckHit = Physics2D.Raycast(transform.position, new Vector2(wallDistance, 0), wallDistance, platformsLayerMask);
}
else
{
WallCheckHit = Physics2D.Raycast(transform.position, new Vector2(-wallDistance, 0), wallDistance, platformsLayerMask);
}

if (WallCheckHit && moveSpeed != 0)
{
isWallSliding = true;
jumpTime = Time.time + wallJumpTime;
}
else if (jumpTime < Time.time)
{
isWallSliding = false;
}

if (isWallSliding)
{
rigidbody2d.velocity = new Vector2(rigidbody2d.velocity.x, Mathf.Clamp(rigidbody2d.velocity.y, wallSlideSPeed, float.MaxValue));
}
}

void Flip ()
{
transform.Rotate(0, 180, 0);
}

}

 

I'm not gonna read all of that lol. Have you tried using the flip built into the sprite renderer instead of transform.rotate? or use scale.x = -1? Also, where is your sprites rotational axis setup?