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This is the code and Nothing will move. I know it's something I have done because everyone else says it works fine.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;

public class PlayerMovement : MonoBehaviour
    public float moveSpeed;

    public float groundDrag;

    public float jumpForce;
    public float jumpCooldown;
    public float airMultiplier;
    bool readyToJump;

    [HideInInspector] public float walkSpeed;
    [HideInInspector] public float sprintSpeed;

    public KeyCode jumpKey = KeyCode.Space;

    [Header("Ground Check")]
    public float playerHeight;
    public LayerMask whatIsGround;
    bool grounded;

    public Transform orientation;

    float horizontalInput;
    float verticalInput;

    Vector3 moveDirection;

    Rigidbody rb;

    private void Start()
        rb = GetComponent<rigidbody>();
        rb.freezeRotation = true;

        readyToJump = true;

    private void Update()
        // ground check
        grounded = Physics.Raycast(transform.position, Vector3.down, playerHeight * 0.5f + 0.3f, whatIsGround);


        // handle drag
        if (grounded)
            rb.drag = groundDrag;
            rb.drag = 0;

    private void FixedUpdate()

    private void MyInput()
        horizontalInput = Input.GetAxisRaw("Horizontal");
        verticalInput = Input.GetAxisRaw("Vertical");

        // when to jump
        if(Input.GetKey(jumpKey) && readyToJump && grounded)
            readyToJump = false;


            Invoke(nameof(ResetJump), jumpCooldown);

    private void MovePlayer()
        // calculate movement direction
        moveDirection = orientation.forward * verticalInput + orientation.right * horizontalInput;

        // on ground
            rb.AddForce(moveDirection.normalized * moveSpeed * 10f, ForceMode.Force);

        // in air
        else if(!grounded)
            rb.AddForce(moveDirection.normalized * moveSpeed * 10f * airMultiplier, ForceMode.Force);

    private void SpeedControl()
        Vector3 flatVel = new Vector3(rb.velocity.x, 0f, rb.velocity.z);

        // limit velocity if needed
        if(flatVel.magnitude > moveSpeed)
            Vector3 limitedVel = flatVel.normalized * moveSpeed;
            rb.velocity = new Vector3(limitedVel.x, rb.velocity.y, limitedVel.z);

    private void Jump()
        // reset y velocity
        rb.velocity = new Vector3(rb.velocity.x, 0f, rb.velocity.z);

        rb.AddForce(transform.up * jumpForce, ForceMode.Impulse);
    private void ResetJump()
        readyToJump = true;

What I have tried:

Tried re-copying it. Tried downloading the code from his website.
Updated 25-Sep-22 18:10pm

1 solution

If you got the code from a YouTube video, then go back there and ask him. Chances are that it never worked; that he doesn't know why; that he can't fix it - so he won't reply. In that case, dump it, and look for better code that does.

Remember, most YouTube videos are posted purely for likes and subscribes: that generates money. The poster most often doesn't know how it works if it does, and didn't write it - it's copy'n'paste that can make money.
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