Try the pause button on your TV remote. The play/pause/stop buttons on my TV work just fine with the Chromecast, and I have an old 2009 TV that was bought well

Try the pause button on your TV remote. The play/pause/stop buttons on my TV work just fine with the Chromecast, and I have an old 2009 TV that was bought well before the Chromecast was a twinkle in Google’s eye.