@WolfBloodfallen
Look along the bottom, sides, and even the back of your TV for a manual power button to turn on TV.
Then download/install the official Roku remote app from the Play/Apple store to a mobile device (phone/tablet) to use as a remote while addressing your physical remote issue.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102