How to screen mirror iPhone to Roku TV to play games? Can’t connect

I have some issues with screen mirroring from my iPhone to TCL Roku TV. I'm hosting a birthday party soon and I was hoping to enhance the fun by playing iPhone games on the big screen with my friends. Unfortunately, my iPhone doesn't seem to recognize the Roku TV. I've already tried restarting both my iPhone and the TV multiple times. I'm not sure what else to try and I'm wondering if there’s a specific method or settings that I'm missing. Could anyone share their experiences or provide detailed steps on how to mirror iPhone to Roku TV? Any guidance would be immensely helpful