Unfortunately you were unable to get the product because it went out of stock. This could be for a number of reasons. Maybe your proxy/server combination was not optimized for whichever website you were trying to checkout on. The stock of the item you were trying to checkout could have also been extremely low while the demand for it was much greater and other users were able to successfully checkout before you did.
Its okay as this happens when competing for hyped products. Remember that there is always another opportunity in the future!
Better luck next time 😤