Hey there Dj2,
I'm sorry about the late response, thank you for being patient! Were you able to find the lost Chromecast Voice Remote? If not, I'd be happy to help out, since I know it's hard to control the Chromecast with Google TV without it! You have two options at this point, you can either use your phone as a remote for Google TV, or you can purchase a replacement Chromecast Voice Remote on the Google Store.
I look forward to your response, and if you have any other questions or concerns for me, please let me know!
Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.
We hope you were able to get the help you need from the suggestions provided by Jeran.
If you have other questions and concerns, feel free to submit another post and provide as many details as possible so that others can lend a hand.
Thanks for the help here, Jeran.