Connecting to tv

I have an iPad 6th generation and want to be able to connect it to a smart tv in order to follow my Pilates and Tai Chi classes on the big screen via the Zoom app. Can you tell me what lead I will need and if possible identify a site for me to buy it. The link my son sent me shows the product unavailable and I have been unable, with any confidence, to find a similar product online. An early reply would be great - next Pilates on Friday!

thanks