@Heg86, you need to give us more information. What's the model number of your Roku device written on it somewhere? Is it a stick that plugs directly into the TV without the need for an HDMI cable? Is there a button on the back of the remote or inside the battery compartment? If so, have you paired the remote to the Roku device?
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.