If you've lost access to your YouTube channel or it has been terminated, there are ways to recover it. You can try contacting YouTube support to assess the reason for the termination and appeal the decision if necessary. If you have simply forgotten your account credentials, you can attempt to reset your password using the account recovery options provided by YouTube. It is important to note that quick action is required in the case of a terminated channel, as the longer you wait the less chance there is of recovering your data and content. It is also advised to maintain backup copies of your videos and other important data, to ensure that you don't lose any valuable content in the future.