If you don’t want to buy something after confirming it on eBay, you can try the following methods:

1. Contact the seller as soon as possible: Sincerely explain the reason to the seller and ask for the seller’s understanding and consent to cancel the transaction. Some sellers may agree.

2. Check the seller’s return policy: Some sellers may have specific regulations on canceling transactions. Find out whether you meet the conditions for cancellation.

3. Ask eBay customer service for help: If you have difficulty communicating with the seller or encounter difficulties, you can contact eBay customer service, explain the situation, and see if they can provide help and guidance.

It should be noted that arbitrarily canceling a confirmed purchase may have a certain impact on your reputation and may not comply with certain eBay regulations, so you should consider it carefully when purchasing.