Where to find problems to solve or code?

Question

have nothing genuine to code.

Answer 1

the challenge of the day is always a good idea if you don't know what to do

Answer 2

You can look for problems here at SoloLearn or at Stack overflow. Solving others' problems increase your concept on the programming language and thus makes you more efficient... it's always a good habit to help people out.
As Kamil said...the challenge of the day is also a very good idea.

Answer 3

www.codewars.com