Disable your screensaver, change to one that doesn't have the little ads floating by, or get in the habit of never pressing Play/Pause when you first pick up the remote. When you pick up the remote press the down arrow button which is pretty much innocuous in all situations.
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.