xbox live gold being cancelled with game pass ultimate?

Once you activated the Game Pass Ultimate your Xbox Live Gold was converted to Game Pass Ultimate time. If you cancelled Game Pass Ultimate, then you lose your Xbox Live Gold that was converted.

Game pass ultimate includes gold and the game pass subscription so if you have the gold and purchase the ultimate subscription it will cancel the gold subscription and put it in with the ultimate. The Gold subscription will show as being cancelled in your
subscriptions.

Game Pass Ultimate includes Xbox Live Gold. If you cancelled Ultimate, then you have cancelled Gold. You will have to purchase Gold again.

You would be best placed to create your own thread.

If you are referring to losing Xbox Live Gold because you cancelled Game Pass Ultimate, there is nothing that can be done. It clearly states that Xbox Live Gold will be converted to Game Pass Ultimate days and can not be reverted and that canceling Game
Pass Ultimate will cancel out the converted Xbox Live Gold. https://support.xbox.com/en-US/billing/xbox-subscriptions/xbox-game-pass-ultimate-faq

You can cancel your Game Pass Ultimate membership at any time, and you will
continue to have access to your Ultimate benefits until your prepaid time ends, at which point you will not be charged again.

Note The upgrade of any prepaid time to Xbox Game Pass Ultimate cannot be reverted back to Xbox Live Gold or Xbox Game Pass, and you cannot receive a refund for Xbox Live Gold or Xbox Game
Pass. You can, however, rejoin Xbox Live Gold or Xbox Game Pass when your Xbox Game Pass Ultimate subscription ends

In short, once you have converted to Game Pass Ultimate, your Xbox Live Gold will be converted to Game Pass Ultimate. If you cancel, you will lose that converted Xbox Live Gold.