If I understand correctly you involved Airbnb in the refund request after you left. You violated Airbnb terms of service that require you notify them of problems during your stay so they can help resolve the situation or find you alternate accommodations.

By violating the terms of service, you limited Airbnb’s ability to assist.

You can’t blame Airbnb for ruining your trip. You CAN blame the host and should leave an accurate review warning the next guest.