How many languages do I have to learn to survive??

Question

Will it be the effort I must direct to master one or two programming languages ​​very well?

One for control applications (games, real time) and another for transactional and web applications (business app, social network, etc):

...Python, Ruby, PHP, GO, VB, C, C++, Ç#, R, Java, Klotin, Swift, Scala, Arduino, Perl, Exilir + (HTML, CSS, JavaScript)...

Answer 1

Not really unless you want to be diverse

Answer 2

Only one language programming...

Answer 3

It depends of what you want to do. If you want to do web, C will not be of a great help. If you want to program robots, JS or Java will not be the best choice to make