The most valuable language you can probably learn right now is Java. So many people are learning Python due to the AI fad, and almost everyone who knows Javascript also knows another language. Java has tons of jobs and fewer and fewer applicants. I work at a Fortune 500 company and for every Python job we post, there are about 300 applicants. For every Java job we post there are maybe 8 applicants. Second, if Java classes are not available, I would say to learn Golang also known as Go from Google. Many companies who go to the cloud have their services hosted on cloud providers like Amazon Web Services, Microsoft Azure, Google Cloud, or Ali Baba. I've worked on more apps in these two languages than any other.