Turtlebot3 teleoperation

Good day everyone.

I have been tried to control my Turtlebot3 via a keyboard and joystick but i am not winning.
I have tried to follow emanual tutorials but atill not winning.
Tried to install ros packeges via ssh method but keep getting permission denied

Is there anyone who can please assist.

Hello,

Can you show me what errors or warnings you are getting?