HDMI is not supported how do I get it to support

Here's a guide: About Apple Digital AV Adapters for iPhone, iPad, and iPod touch - Apple Support There's a troubleshooting section at the bottom.

If that doesn't help, you can try contacting Apple Support directly using this link: https://getsupport.apple.com/

Hope this helps,
Richard

If your TV has an HDMI port, all you need is a Lightning > HDMI adapter and an HDMI cable.