How can I become a professional programmer?give me suggestions

Answer 1

Practice more , code until it becomes muscle memory.

Answer 2

There are many books and online courses such as SoloLearn where you can learn by yourself. You can always take a boot camp or class, it's really your approach towards learning a new language. The more you learn, the more advanced you will be in a language. It also depends on how far you want to go with programming.