Hello everyone, I have just started CP and I am struggling a lot. I want some useful advice from all of you.:)

I want some advice on which topic I should be practising more, my speed to solve questions is really slow how can I improve that and which level of questions I should practice.

I was told participating in small contests will improve a lot but when I attempted DIV4, I understood I want to work on myself. So it will be good for me if I participate in the upcoming CR or I should practice first?

Also, I have faced a problem in applying Data Structure how can I improve that?

Any help will be much appreciated, Thanks in advance. _/_ Have a safe year. :)