Programming Roadmap

I needed help with my path. I aspire to be a data scientist some day - specifically I want to develop AI powered mobile and web apps. So as of now I am using typescript/js - node for backend and front-end- react and react-native to develop my portfolio

I did take a few courses in Data Science but I can’t afford certificates yet.

So my question is should I learn python for backend to keep my skills in python fresh? Since there are so many Data Science/ Statistics libraries as well or keep up with node. Which is the wise choice for my future?

Please help

Thanks so much for your time I appreciate it.

If you want to do data science then you should learn python