It's hard to say what language is the most necessary nowadays, but I think, it is better to choose Python. It has become one of the most popular languages. Its rating has recently increased. As Python has less code lines, it is loved by many programmers. And it should be mentioned that programmer wages are growing because of the requirements of jobs for Python coders. Recently I've found a good article which has explained the factors that can affect Python programmers wages -
https://diceus.com/python-developer-salary/. I hope youl will find it interesting and useful!