@Baruch
Can always install the Roku mobile app on your phone and use as a remote as well. (plenty of light from the cell phone/tablet). https://www.roku.com/mobile-app
The backlit Voice Remote v2 mentioned by @HDMIGuy can be found on the Roku accessories page. https://www.roku.com/products/accessories
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, 4802, 4850, Premiere+ 3921, Express 4k+ 3941, Streambar 9102