Make stuff not public if it doesn't need to be

Assets/Scripts/BouncyButton.cs

@@ -4,11 +4,11 @@ using UnityEngine.InputSystem;
 
 public class BouncyButton : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
 {
-    bool isHovered = false;
-    bool isHeld = false;
-    bool didBounce = false;
-    Vector3 originalScale;
-    Vector3 finalScale;
+    private bool isHovered = false;
+    private bool isHeld = false;
+    private bool didBounce = false;
+    private Vector3 originalScale;
+    private Vector3 finalScale;
 
     void Start()
     {