locating folder buried in system
I am using Catalina 10.15.7. I noticed that some mail attachments are automatically downloaded to a folder that I cannot access. This folder is HARDDRIVE / USERS / USERNAME / LIBRARY / CONTAINERS / COM.APPLE.MAIL / DATA / LIBRARY / MAIL DOWNLOADS. The downloaded files are assigned a 26-digit name. When I open my hard drive I cannot get past USERNAME. I imagine that there are hundreds of documents housed there, none of which I probably do not need any more. How can I gain access to that folder to delete these files? Or can I?
MacBook Pro 15″, macOS 10.15