I have a smart tv but I it won’t work with the Casting options on my phone, even worse my google home won’t interface with it. Then I found Chromecast, it was so small I was almost convinced it was a gimmick.  I plugged it in to the HDMI of my tv and plugged in the power. Setup wasn’t too difficult, I even trust my mother to do it. After installation I was able to control my TV with voice commands via Google home and could finally cast from my phone directly to my TV with virtually no effort. This has been such a relief and convenience for me.