I am not an expert, but as I am in the industry I could provide few insights.
C/C++ : Learn them coz they are the base which will give you understanding of evolution of languages. They are still used in many development areas.
Java : This is the best language to develop your critical thinking as this is a language so vast in its nature which helps you to understand the intricacies of development area. [C/C++ is recommended before Java.( My opinion)]
Python: if you like to experiment with data and all, this the coolest one. Please do your research!
There can't be a single language which can be considered as the best because they all are used in different areas of problem solving scenarios.
Or just choose one and learn it, make projects.
Again, be patient while learning and implementing.