Junk Folder has disappeared

Since updating to Big Sur, my Mail Junk Folder is gone. I quit Mail and restarted computer - still gone. Another thread suggests adding Junk to Favorites. I can't even find the Folder to add it. Not in side bar, not available on Favorites bar at top.

I looked at settings for Mail - Junk filter is enabled - I even reset it. Same situation. Only happened since the update, all my inboxes had filtered previously.

Where do I find this folder?