How to add an object with multiple fields into an ArrayList?

I'm fairly new to Java and I've been trying to add an object to an ArrayList storing the respective object type. However, there is a catch. I want to have an indefinite amount of objects added into the ArrayList. The length is based on the user input, so I can't define them beforehand and use .add() after initializing the fields.

This is the class in question. There are 4 private fields and public getters and setters (only two included for context):

public class Player {
private int id; // This will be unique for each player.
private int roundScore; // Score accumulated during a round, suspect to be reset if the player rolls a double.
private int bankScore; // Secured score of a player.
private String name;
public Player() {
roundScore = 0;
bankScore = 0;   
}
public void setID(int id) {
this.id = id;
}
public int getID() {
return id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}

And this is the method I tried to use to generate players (this method is in another class):

public void generatePlayers(int num) {
Player dummyPlayer = new Player();
List<Player> playerList = new ArrayList<Player>();
Scanner sr = new Scanner(System.in);
for (int i = 0; i < num; i++) {
dummyPlayer.setID(i);
System.out.println("\nWhat is the name of player " + i++ + "?"); 
dummyPlayer.setName(sr.nextLine());
System.out.println(dummyPlayer.getName() + ", welcome to the game!");
playerList.add(dummyPlayer); // Oops, this is dumb.       
}    
}

The idea was to create an instance of a player object called "dummyPlayer", store the variables into the object and add the object into the ArrayList. "Should be fine, right?" or so I thought before I realized I basically added multiple instances of the same object which will all change if I change one of them because referencing is a thing.

Is there a way to individually set the fields of each value in the array? I'm sorry if I missed something vital or asking something stupid. I tried to search other questions but they didn't quite click. Thank you for your time.

As commented by @tgdavies, change generatePlayers() to move the new Player() line inside the for loop like so:

public void generatePlayers(int num) {
    List<Player> playerList = new ArrayList<Player>();
    Scanner sr = new Scanner(System.in);
    
    for (int i = 0; i < num; i++) {
        Player dummyPlayer = new Player();
        dummyPlayer.setID(i);
        System.out.println("\nWhat is the name of player " + i++ + "?"); 
        dummyPlayer.setName(sr.nextLine());
        System.out.println(dummyPlayer.getName() + ", welcome to the game!");
        playerList.add(dummyPlayer); // Oops, this is dumb.       
    }    
}

This way for every iteration of the for loop you create a new instance of Player, and you get to keep the as-is dummyPlayer variable (since local variables only exist within the block it is stated).

If for some reason there is a need to reference the dummyPlayer variable outside the for loop, you can state just the type and variable name before the loop and instantiate the Player class in the loop:

    //... Same as above
    Player dummyPlayer; //beware of null
    
    for (int i = 0; i < num; i++) {
        dummyPlayer = new Player(); //Player class instantiation
        //... Same as above
    }
    
    dummyPlayer.toString();  //you can still reference dummyPlayer from here