def retry_on_failure(max_attempts=3, delay=1):
    def decorator(func):
        def wrapper(*args, **kwargs):
            for attempt in range(max_attempts):
                try:
                    return func(*args, **kwargs)
                except Exception as e:
                    if attempt == max_attempts - 1:
                        raise e
                    time.sleep(delay)
            return None
        return wrapper
    return decorator

@retry_on_failure(max_attempts=5, delay=2)
def fetch_data():
    return requests.get("https://api.example.com/data").json()