I have learnt basics but i dont know how to use them.whyyyy?

I am like u bro.the problem we have right now is problem solving .we are not good problem solvers yet. it need practice and practice.But one of the good advice peoplw give me is to first write everything on the pqpwr abd after that code.sorry for bad english.

Try some test scenarios from practical world. Practice will make you perfect. All the best!