Please help/suggest🙏

I have my telephonic round in few days. (less than a week).

Can anyone suggest me what type of topics should I practise more?
Like should I focus on med - hard topics like: [DP,Graph,Trees, LinkedLists]
or
Should I try practising on easy-med topics like: [Array, Strings, Recursion,Stack,Queue]?

I am little scared/nervous. Please suggest anything.

Thanks in advance. :)