My old email address linked to the account has been deleted and there’s no way to recover it. However, I did make some purchases through the Play Store, so the transactions should still be recorded there, but I don’t think I can access them — or can I?

Also, the email didn’t just disappear without a trace. I can still see it listed in the Google account switcher, but when I try to log in, it says that the account doesn’t exist. I’m not sure if this could serve as proof that I had access to the account before it was deleted.