Why won't this script work? (Supposed to make one object go to another)

Unity Engine
1

Hiya, I tried to make this script designed to make one object follow another and I must have done something wrong, if you could tell me why it doesn’t work that would be great, thanks in advance.

public GameObject followingObject;
    public GameObject followedObject;
    Vector3 Transport;
    public bool alongX;
    public bool alongY;
    public bool alongZ;


    void FixedUpdate () {
       
        if (alongX = true) {
            Transport.x = (followedObject.transform.position.x);
        } else {
            Transport.x = (followingObject.transform.position.x);
        }
        if (alongY = true) {
            Transport.y = (followedObject.transform.position.y);
        } else {
            Transport.y  = (followingObject.transform.position.y);
        }
        if (alongX = true) {
            Transport.z = (followedObject.transform.position.z);
        } else {
            Transport.z = (followingObject.transform.position.z);
        }
    }
   
    void LateUpdate () {

        followingObject.transform.position = Transport;

    }
2 
alongX = true

assign true to alongX

alongX == true

compare alongX to true