Is there a way to see a purchase I made? I need proof of purchase, and can't find my receipt.

They will know that it was bought cuz they scanned the bar code people take things back without receipts

Depens

Check your debit or credit card statements

Check your app or ask you bank card for assistance

They can scan it.

There are always records of every transaction.

If you are trying to return an item you don't need a receipt usually.

You can ask customer service for help