Unable to Purchase YouTube Premium – Continuous Error Messages

I have been trying to purchase a YouTube Premium subscription, but every time I attempt the transaction, it fails. Initially, I thought it might be an issue with my account, so I created different accounts to test the process. However, even with these new accounts, the same errors persist. I repeatedly receive messages like "The item you want to purchase is not available" or "Unable to locate item." This problem has made it impossible to complete the subscription process.

I rely on YouTube for daily usage and was looking forward to upgrading to Premium, but this unresolved issue is incredibly frustrating. I urge YouTube to fix this error immediately and provide clear guidance on how I can complete my purchase.