SQLcl Error "no ocijdbc21 in java.library.path"

Question

I'm trying to use SQLcl, but I am not able to enter my TNS credentials as I would as SQLPlus. In SQLPlus I could just enter a string:

"{User}"/"{Password}"@(DESCRIPTION = (ADDRESS = (PROTOCOL = {Protocol})(HOST = {Host})(PORT = {Port}))(CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = {Service})))

I believe it does allow me neither the usage of commands Ctrl+C, nor Ctrl+V.

This is what is shown first.

Then when I enter my credentials I get this error.

How can I set it up & be able to configure DB TNS Names (or whatever applies) & thus connect? Any idea on what's going on?