Someone pointed out you had already apparently opened a thread on this Cannot connect to SMB shares
So I removed my post.
You cannot access Windows shares without a password, these days. You must supply the username and password for the owner of the folders you want to share (ie your own login on the Windows machine).
Confusingly, it’s more difficult to share a ‘Public’ folder on Windows than to share one of your own folders. I don’t recommend you try.