how to connect to the command line of mysql

I have set up a new instance in Lightsail with Debian 11 LAMP stack,

1. Connected PhpMyAdmin through a tunnelled PuTTY and uploaded my data which looks good.
2. Connected with FIleZilla and uploaded some php which works, and need to connect to the MySql with command line.

I have used mysql -u bitnami -p with password in the PuTTY command line and get ERROR 1045 (28000): Access denied for user 'bitnami'@'localhost' (using password: YES).
I have tried all the passwords I have used with this and am getting nowhere, not sure what i am missing. Can anyone help please?