New iPhone 15 pro issues

Hi guys. I’m new on the forum and hoping for some help or to be pointed to the relevant post if it’s an existing issue.

I’ve upgraded to the new iPhone 15pro which has a usb c connection oppose to the old Apple one. I’m having extreme difficulty finding a hdmi converter which works. The one which does work is designed for pcs and absolutely drains the battery (lasts about 75 minutes on Zwift). It also starts lagging after 25 minutes because the phone gets so hot. I absolutely love Zwift and this is bloody stressing me out :joy:. Tried multiple other adapters and they keep disconnecting. Any advice greatly appreciated. Heeeeelp!!!