From a professional perspective, what do you want to work on? Web technologies? CI/CD, IT automation, etc.? Or something more like operating systems, robotics

From a professional perspective, what do you want to work on? Web technologies? CI/CD, IT automation, etc.? Or something more like operating systems, robotics, hardware, drivers? Or do you want to self-educate for the sake of it, to learn different paradigms and be a better programmer in general? (Everyone wants to do this, but not everyone has the time). Golang and Python are incredibly popular in the automation/"glue code" space. Java is popular in enterprise development (think banks). Systems languages are popular if you're developing... systems.