Difficulty understanding Tamil used in newscasts

I am fluent in colloquial Tamil and can follow most of the dialogue in Tamil movies, but I struggle to understand newscasts and formal speeches. Like this SunTV newscast for example, the words go completely above my head and at most I can identify parts of speech.

https://youtu.be/4g8GIYZ7b2Q?si=2PUImE6dw3vebfAS

How can I develop my comprehension of this more formal version of Tamil? Are there good resources for it?