I a, trying to make my first 2d movement but my player with fall through the map when i press play can someone help?

here is my code using UnityEngine;

public class NewBehaviourScript : MonoBehaviour
{
public float MovementSpeed = 1;
private void Start()
{

}

private void Update()
{
  var movement = Input.GetAxis("Horiztonal");
  transform.position += new Vector3(movement,0,0) * Time.deltaTime * MovementSpeed;

}

}

It looks like your player has a RigidBody component, but is missing a Collider.

Add a collider to the platforms or the floor in your came, and add a collider to the player object. Without this, gravity pulls the RigidBody down and there is nothing to stop it.

There are some very good tutorials on YouTube for this type of game - if you follow one all the way through you will learn a lot more than this RigidBody & Colliders.

One good example on YouTube is this one from Jason Weimann, I am not sponsored by him, but I like his videos: https://www.youtube.com/watch?v=HAvfA1F3qTo