Reviving the Chromecast thread

Hi there! Reviving as I have not seen discussion on this topic since 2021. I love the app and would like to use it with YouTube and Netflix on my TV via Chromecast. However, when I cast the whole screen of my computer to my TV, the video goes black and will not play back. This happens for every video on Netflix and YouTube in Russian, Arabic, and Turkish learning mode. I am in Turkey but have had the same experience using a VPN with a US-based IP address. Has anyone found a workaround?