.ssh not disponible

Summary:

I'm making the Oracle Cloud Infrastructure Foundations course.

I tried use a ssh key, but my user dont have a key, and I tryed use the cloud shell with the user ociadmin, , but I received this message

"Policy Missing

You are not authorized to access Cloud Shell. The tenancy admin must add a policy to grant your access. Review the policy requirement here."

I maked the policy rule , but did not work

First question: I need make the ssh keys manually?

Second : Is it is it possible that the ociadmin user can use the cloud shell?

I'm sendind prints to help