Below is the code I’m using. Basically, it is a ball with the sprite of a tiny
spaceship that rotates around a ring. It has a trail renderer attached and
when I change the direction the trail comes out the top in the wrong direction.
I need to know how to flip the ship to match the trail.

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

public class BallRotation : MonoBehaviour
{
    [SerializeField] private float _speed;
    
    private void FixedUpdate()
    {
        transform.Rotate(0, 0, _speed * Time.deltaTime);
       
    }

    public void ChangeDirection()
    {
        _speed = -_speed;
    }   
}