I tried to make keys instead of password

I have ubuntu 16.04 I have disabled root login. I have a user with sudo.

I made an ssh authentication key pair: I tried to scp my public key but was told that the file doesnt exist. I copied the public key to text edit on my mac. I pasted it into a file I created in .ssh called authorized_keys. A file called authorized also appeared. I changed the permissions in sshd_config to allow authorized keys and not allow password login. I chmod 400 authorized keys and authorized. I chmod 700 .ssh

The long and the short of it is that I cant get into my server, no password, no root, no keys, I dont even get aske for my phrase.

I hope I’m not completely stuffed cos I really dont want to destroy my droplet and start again.

Any ideas? In case its not painfully obvious I am a complete noob and just working from a book so super easy answers would be appreciated.

Thanks all