I need advice.

Question

I can program in 2-3 languages, but I can’t make any cool codes. How can I make better codes?

Answer 1

Look out for Coding Challenges like the current one:

https://www.sololearn.com/learn/14382/?ref=app

Answer 2

Practice practice and practice.
First just try to create what others have already made, try to dublicate what you see in a software or a game, you'll slowly develop more and more ideas and use your codes effectively