Override get_conditional_event_script

### Step 1: Locate the Method
The `get_conditional_event_script` method is usually found in the `FacebookEventsTracker` class. To confirm its exact location, you can navigate to the `wp-content/plugins/facebook-for-woocommerce` folder and search for this method.

### Step 2: Create a Child Class
You can extend the existing class to override the method. Here's an example of how to do that:

// In your theme's functions.php or a custom plugin

if ( class_exists( 'FacebookEventsTracker' ) ) {

    class My_Custom_Facebook_Events_Tracker extends FacebookEventsTracker {

        public function get_conditional_event_script( $event_name, $params = [], $delay = 0 ) {
            // Your custom logic here
            $script = "<script>
                setTimeout(function() {
                    fbq('track', '{$event_name}', " . json_encode($params) . ");
                }, {$delay});
            </script>";

            return $script;
        }
    }

    // Override the existing instance with your custom class
    add_action('init', function () {
        global $wc_facebook_events_tracker;
        $wc_facebook_events_tracker = new My_Custom_Facebook_Events_Tracker();
    });
}

### Explanation
1. **Check Class Existence**: Ensure the `FacebookEventsTracker` class exists.
2. **Extend the Class**: Create a new class `My_Custom_Facebook_Events_Tracker` that extends `FacebookEventsTracker`.
3. **Override the Method**: Define your custom logic inside the `get_conditional_event_script` method.
4. **Replace the Instance**: Use the `init` hook to replace the default instance with your custom one.

### Step 3: Clear Cache
After adding this code, make sure to clear your browser cache and any caching plugins you're using to see the changes.

### Step 4: Test the Changes
Verify that your overridden method is being called by checking if the Facebook tracking events are firing as expected.

This approach allows you to customize the behavior of the Facebook for WooCommerce plugin without directly modifying its core files, ensuring that your changes are not lost during plugin updates.

### Approach: Using Filters or Hooks
The `Facebook for WooCommerce` plugin might use specific hooks or filters that you can leverage to modify the behavior of the `get_conditional_event_script` method.

First, let's debug to see if the plugin provides any hooks around that method. If it does not, we can use **method replacement** via PHP's `Closure` binding technique.

### Method 1: Using `woocommerce` Action Hooks
Try to modify the event script by hooking into the available actions:

add_action('wp_head', 'override_facebook_conditional_event_script', 20);

function override_facebook_conditional_event_script() {
    if ( class_exists( 'FacebookEventsTracker' ) ) {
        global $wc_facebook_events_tracker;

        if ( $wc_facebook_events_tracker instanceof FacebookEventsTracker ) {
            remove_action('wp_head', [$wc_facebook_events_tracker, 'inject_pixel_code']);

            add_action('wp_head', function() use ($wc_facebook_events_tracker) {
                // Example of overriding get_conditional_event_script
                echo "<!-- Custom FB Event Script -->";
                echo $wc_facebook_events_tracker->get_conditional_event_script('MyCustomEvent', ['value' => 10], 3000);
            });
        }
    }
}

### Explanation
1. **Check Class and Instance**: Ensures the `FacebookEventsTracker` instance is available.
2. **Remove Default Action**: Unbinds the existing pixel code injection.
3. **Custom Pixel Injection**: Replaces it with your own conditional event script.

### Method 2: Using PHP `Closure` to Override Methods
If the above does not work, you can try using PHP's `Closure::bind()` to override the method dynamically.

add_action('init', function () {
    if ( class_exists( 'FacebookEventsTracker' ) ) {
        global $wc_facebook_events_tracker;

        if ( $wc_facebook_events_tracker instanceof FacebookEventsTracker ) {
            // Create a closure to override the method
            $newScriptFunction = function($event_name, $params = [], $delay = 0) {
                return "<script>
                setTimeout(function() {
                    fbq('track', '{$event_name}', " . json_encode($params) . ");
                }, {$delay});
                </script>";
            };

            // Override the method
            $overrideMethod = Closure::bind($newScriptFunction, $wc_facebook_events_tracker, get_class($wc_facebook_events_tracker));
            $wc_facebook_events_tracker->get_conditional_event_script = $overrideMethod;
        }
    }
});

This approach leverages **closures** to override existing methods at runtime.

### Debugging
Add some debug statements:

add_action('init', function () {
    error_log('Facebook Tracker Event overridden');
});

Check `wp-content/debug.log` for any logs if debugging is enabled in `wp-config.php`:

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

### Testing
1. **Clear all Cache** (Browser & Server).
2. **Reload** with Inspect (Console) to confirm if events fire.
3. **Check Source** for injected scripts.

These alternatives should give you more granular control over Facebook events while ensuring compatibility with WooCommerce environments. Let me know which solution works or provides more context for the error you're encountering!