Hi,

To chose a stream, the first step  of yours should be to figure out what you want to be in life and what particular goal you have in your mind. For this, you must have a knowledge about different career opportunities each stream offer. Once you do that, them you can move forward and select a stream for yourself.

Here is a link which has different stream combinations and their career opportunities: https://school.careers360.com/articles/courses-after-12th

You can refer to this link to get an idea about what you want to do and then select a stream.

I hope this helped you.