Many modern electronic devices, like the Roku streaming stick and Roku TV, can be controlled without a remote control. There are several ways to do this, depending on the specific Roku device you have.
One common method is to use the Roku mobile app. This app is available for both iOS and Android devices, and it allows you to control your Roku device from your phone or tablet. To use the app, simply download it from the App Store or Google Play and then follow the instructions to connect it to your Roku device. Once connected, you can use the app to turn on your Roku device, launch channels, and control playback.