@userMyL143aYrD this sounds like a possible issue with the Mi Casting function.
Have you tried the posts here for assistance?
If one of the above steps help, let us know here via a reply and selecting this post as the solution.
No. Please note I can cast it to TV but picture is not coming if I use it for Amazon or Disney Hot Star. Only sound comes. However, when I use it for YouTube it's running quite fine both video and audio