Question Why am my character snapping to one spot and not moving?

I had this work, but after my summer vacation when i came back the movement of my character was broken. I have troubleshot a bit and cant figure out what is wrong. I am new to unity.



Script:




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

public class Movement : MonoBehaviour



{
//Variables
public float speed;
public float jumpForce;
bool isGrounded = false;
public Transform isGroundedChecker;
public float checkGroundRadius;
public LayerMask groundLayer;
public float fallMultiplier = 2.5f;
public float lowJumpMultiplier = 2f;
public float rememberGroundedFor;
float lastTimeGrounded;
bool fr = false;



private Animator anim;

private Transform tr;






Rigidbody2D rb;

// Start is called before the first frame update
void Start()
{
rb = GetComponent<Rigidbody2D>();

tr = GetComponent<Transform>();

anim = GetComponent<Animator>();


}








// Update is called once per frame
void Update()
{
Move();
Jump();
CheckIfGrounded();
BetterJump();
}

void Move()
{
float x = Input.GetAxisRaw("Horizontal");

float moveBy = x * speed;

rb.velocity = new Vector2(moveBy, rb.velocity.y);



if (x == 0)
{

anim.SetBool("isRunning", false);

}
else
{
anim.SetBool("isRunning", true);
Debug.Log("isrunning");
}



if(x > 0)
{

fr = true;
}

if(x < 0)
{

fr = false;
}


if(fr == true)
{
tr.rotation = new Quaternion(0, 1, 0, 0);

}
else
{
tr.rotation = new Quaternion(0, 0, 0, 0);


}



}




void Jump()
{
if (Input.GetKeyDown(KeyCode.Space) && (isGrounded || Time.time - lastTimeGrounded <= rememberGroundedFor))
{

rb.velocity = new Vector2(rb.velocity.x, jumpForce);
anim.SetTrigger("takeOff");
}

if (isGrounded == true)
{
anim.SetBool("isJumping", false);
}

else {
anim.SetBool("isJumping", true);
}

}











void CheckIfGrounded() {
Collider2D colliders = Physics2D.OverlapCircle(isGroundedChecker.position, checkGroundRadius, groundLayer);

if (colliders != null) {
isGrounded = true;
} else {
if (isGrounded) {
lastTimeGrounded = Time.time;
}
isGrounded = false;
}
}






void BetterJump() {
if (rb.velocity.y < 0) {

rb.velocity += Vector2.up * Physics2D.gravity * (fallMultiplier - 1) * Time.deltaTime;

} else if (rb.velocity.y > 0 && !Input.GetKey(KeyCode.Space)) {
rb.velocity += Vector2.up * Physics2D.gravity * (lowJumpMultiplier - 1) * Time.deltaTime;
}
}

}